Top Sellers
35' Boat Size Snatch Block, 1-3/4" Sheave Dia., 5/8" Line Dia., 3,530lb. Max. SWL from RONSTAN
Features include 15-5 PH stainless shackle and attachment bolt for strength, soft PVC cheeks that prevent damage to decks and eliminate clatter, cast 300 series stainless steel hasp and hardware, stainless roller bearings for smooth operation. The RF6741 blocks have removable aluminum sheaves, midrange (RF6710, 6711, 6720, and 6721) feature Acetal sheaves, and big boat 6751 sheaves are removable stainless steel. Black. Cheek Material/Finish: Soft PVC. Bearings: Stainless needle bearings.
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32' Boat Size Snatch Block, 2-1/2" Sheave Dia., 1/2" Line Dia., 2,200lb. Max. SWL from RONSTAN
Features include 15-5 PH stainless shackle and attachment bolt for strength, soft PVC cheeks that prevent damage to decks and eliminate clatter, cast 300 series stainless steel hasp and hardware, stainless roller bearings for smooth operation. The RF6741 blocks have removable aluminum sheaves, midrange (RF6710, 6711, 6720, and 6721) feature Acetal sheaves, and big boat 6751 sheaves are removable stainless steel. Black. Cheek Material/Finish: Soft PVC. Bearings: Stainless needle bearings.
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35' Boat Size Snatch Block with Trunnion, 1-3/4" Sheave Dia., 5/8" Line Dia., 3,310lb. Max. SWL from RONSTAN
Features include 15-5 PH stainless shackle and attachment bolt for strength, soft PVC cheeks that prevent damage to decks and eliminate clatter, cast 300 series stainless steel hasp and hardware, stainless roller bearings for smooth operation. The RF6741 blocks have removable aluminum sheaves, midrange (RF6710, 6711, 6720, and 6721) feature Acetal sheaves, and big boat 6751 sheaves are removable stainless steel. Black. Cheek Material/Finish: Soft PVC. Bearings: Stainless needle bearings.
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50' Boat Size Snatch Block with Trunnion, 3-1/4" Sheave Dia., 3/4" Line Dia., 6,610lb. Max. SWL from RONSTAN
Features include 15-5 PH stainless shackle and attachment bolt for strength, soft PVC cheeks that prevent damage to decks and eliminate clatter, cast 300 series stainless steel hasp and hardware, stainless roller bearings for smooth operation. The RF6741 blocks have removable aluminum sheaves, midrange (RF6710, 6711, 6720, and 6721) feature Acetal sheaves, and big boat 6751 sheaves are removable stainless steel. Black. Cheek Material/Finish: Soft PVC. Bearings: Stainless needle bearings.
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32' Boat Size Snatch Block with Trunnion, 2-1/2" Sheave Dia., 1/2" Line Dia., 2,200lb. Max. SWL from RONSTAN
Features include 15-5 PH stainless shackle and attachment bolt for strength, soft PVC cheeks that prevent damage to decks and eliminate clatter, cast 300 series stainless steel hasp and hardware, stainless roller bearings for smooth operation. The RF6741 blocks have removable aluminum sheaves, midrange (RF6710, 6711, 6720, and 6721) feature Acetal sheaves, and big boat 6751 sheaves are removable stainless steel. Black. Cheek Material/Finish: Soft PVC. Bearings: Stainless needle bearings.
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All-Purpose Block, Fiddle, 882lb. SWL, 3.2oz. from RONSTAN
Much stronger than other same-size blocks and much more compact than other blocks handling the same loads. “Smart” features include a unique captive lock universal head fitting and an adjustable cam arm. The ball bearing blocks feature Ronstan’s two-stage bearing system, which has exceptional low-friction performance and very high maximum working loads. For dinghies and keelboats to 26'. Bearings: Two-stage acetal ball bearing system or plain bearing. Sheave Size: 1-9/16" (40mm). ).
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All-Purpose Block, Stand-Up, 882lb. SWL, 2.5oz. from RONSTAN
Much stronger than other same-size blocks and much more compact than other blocks handling the same loads. “Smart” features include a unique captive lock universal head fitting and an adjustable cam arm. The ball bearing blocks feature Ronstan’s two-stage bearing system, which has exceptional low-friction performance and very high maximum working loads. For dinghies and keelboats to 26'. Bearings: Two-stage acetal ball bearing system or plain bearing. Sheave Size: 1-9/16" (40mm). ).
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All-Purpose Block, Fiddle/Becket/Cam, 882lb. SWL, 5.8oz. from RONSTAN
Much stronger than other same-size blocks and much more compact than other blocks handling the same loads. “Smart” features include a unique captive lock universal head fitting and an adjustable cam arm. The ball bearing blocks feature Ronstan’s two-stage bearing system, which has exceptional low-friction performance and very high maximum working loads. For dinghies and keelboats to 26'. Bearings: Two-stage acetal ball bearing system or plain bearing. Sheave Size: 1-9/16" (40mm). ).
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All-Purpose Block, Single/Becket, 882lb. SWL, 2.8oz. from RONSTAN
Much stronger than other same-size blocks and much more compact than other blocks handling the same loads. “Smart” features include a unique captive lock universal head fitting and an adjustable cam arm. The ball bearing blocks feature Ronstan’s two-stage bearing system, which has exceptional low-friction performance and very high maximum working loads. For dinghies and keelboats to 26'. Bearings: Two-stage acetal ball bearing system or plain bearing. Sheave Size: 1-9/16" (40mm). ).
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Series 40 Organizer, with 3 Sheaves from RONSTAN
These deck organizers are an effective means of deflecting halyards and control lines to winches and stopper cleats. Cheeks are manufactured from aircraft-grade aluminum and hard-coat anodized for durability. All-purpose sheaves handle extreme high loads and all configurations can be stacked. Sheave diameter: 1 5/8" (40mm). Max. line size: 1/2" (12mm). Max.
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Series 40 Organizer with 2 Sheaves from RONSTAN
These deck organizers are an effective means of deflecting halyards and control lines to winches and stopper cleats. Cheeks are manufactured from aircraft-grade aluminum and hard-coat anodized for durability. All-purpose sheaves handle extreme high loads and all configurations can be stacked. Sheave diameter: 1 5/8" (40mm). Max. line size: 1/2" (12mm). Max.
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All-Purpose Block, Double, 1,323lb. SWL, 4.8oz. from RONSTAN
Much stronger than other same-size blocks and much more compact than other blocks handling the same loads. “Smart” features include a unique captive lock universal head fitting and an adjustable cam arm. The ball bearing blocks feature Ronstan’s two-stage bearing system, which has exceptional low-friction performance and very high maximum working loads. For dinghies and keelboats to 26'. Bearings: Two-stage acetal ball bearing system or plain bearing. Sheave Size: 1-9/16" (40mm). ).
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All-Purpose Block, Single, 882lb. SWL, 2.5oz. from RONSTAN
Much stronger than other same-size blocks and much more compact than other blocks handling the same loads. “Smart” features include a unique captive lock universal head fitting and an adjustable cam arm. The ball bearing blocks feature Ronstan’s two-stage bearing system, which has exceptional low-friction performance and very high maximum working loads. For dinghies and keelboats to 26'. Bearings: Two-stage acetal ball bearing system or plain bearing. Sheave Size: 1-9/16" (40mm). ).
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All-Purpose Block, Triple with Becket, 2-Axis Head, 1,540lb. SWL, 7.4oz. from RONSTAN
Much stronger than other same-size blocks and much more compact than other blocks handling the same loads. “Smart” features include a unique captive lock universal head fitting and an adjustable cam arm. The ball bearing blocks feature Ronstan’s two-stage bearing system, which has exceptional low-friction performance and very high maximum working loads. For dinghies and keelboats to 26'. Bearings: Two-stage acetal ball bearing system or plain bearing. Sheave Size: 1-9/16" (40mm). ).
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Cam Lock Snatch Block, 1-3/4" Dia., 5/8" Sheave Line Dia., 3,310lb. Max. SWL from RONSTAN
The improved latch mechanism makes these snatch blocks easy to open and close even with wet, cold hands. A small lever by the opening gate operates with light finger pressure to release the gate and allow lines in and out. All stainless construction with a hardcote anodized aluminum sheave. Stainless roller bearings are easily lubricated. Sheave: Anodized aluminum. Cheek Material/Finish: Soft PVC. Bearings: Stainless needle bearings. Opening: Cam Lock.
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RONSTAN Sheave
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Home -> Sailboat -> Blocks->Sheave Boxes & Lead Blocks
Stainless steel blocks with plastic or metal sheaves. Can be mounted inside an extrusion to lead lines out, or for turning lines on deck to lead them back to the cockpit. Sheave: 3/4" . Bearings: Plain bearings . Cheek Material/Finish: Polished 316 Stainless .
Part No: RF917
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Home -> Sailboat -> Blocks->Sheave Boxes & Lead Blocks
Stainless steel blocks with plastic or metal sheaves. Can be mounted inside an extrusion to lead lines out, or for turning lines on deck to lead them back to the cockpit. Sheave: 3/4" . Bearings: Plain bearings . Cheek Material/Finish: Polished 316 Stainless .
Part No: RF452
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Home -> Sailboat -> Blocks->Sheave Boxes & Lead Blocks
Stainless steel blocks with plastic or metal sheaves. Can be mounted inside an extrusion to lead lines out, or for turning lines on deck to lead them back to the cockpit. Sheave: 3/4" . Bearings: Plain bearings . Cheek Material/Finish: Polished 316 Stainless .
Part No: RF568
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Home -> Sailboat -> Blocks->Sheave Boxes & Lead Blocks
Stainless steel blocks with plastic or metal sheaves. Can be mounted inside an extrusion to lead lines out, or for turning lines on deck to lead them back to the cockpit. Sheave: 3/4" . Bearings: Plain bearings . Cheek Material/Finish: Polished 316 Stainless .
Part No: RF919
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Home -> Sailboat -> Blocks->Replacement Sheaves
All are for rope except RF1118, which is also for wire.
Part No: RF578
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Home -> Sailboat -> Blocks->Replacement Sheaves
All are for rope except RF1118, which is also for wire.
Part No: RF1118
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Home -> Sailboat -> Blocks->Replacement Sheaves
All are for rope except RF1118, which is also for wire.
Part No: RF436
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Home -> Sailboat -> Blocks->Replacement Sheaves
All are for rope except RF1118, which is also for wire.
Part No: RF431
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Home -> Sailboat -> Blocks -> Sheaves, Parts & Bases
Snap shackle adapter with Trunnion converts your Ronstan blocks for new uses. Trunnion snap shackles can move in two planes (pivot and swivel) to maintain optimum articulation. Fits blocks with shackle pins up to 5mm (3/16"). Investment cast stainless steel. Grade 316 stainless steel plunger pin.
Part No: RF6171
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Home -> Sailboat -> Blocks -> Sheaves, Parts & Bases
Accepts all Series 38 and 45 swivel top blocks. Holds blocks upright without capsizing. Stainless steel. Weighs 2.
Part No: RF1455
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Home -> Sailboat -> Blocks -> Snatch Blocks->Snatch Blocks
Features include 15-5 PH stainless shackle and attachment bolt for strength, soft PVC cheeks that prevent damage to decks and eliminate clatter, cast 300 series stainless steel hasp and hardware, stainless roller bearings for smooth operation. The RF6741 blocks have removable aluminum sheaves, midrange (RF6710, 6711, 6720, and 6721) feature Acetal sheaves, and big boat 6751 sheaves are removable stainless steel. Black. Cheek Material/Finish: Soft PVC. Bearings: Stainless needle bearings.
Part No: RF6710
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Home -> Sailboat -> Blocks -> Blocks->Wire Blocks
Single blocks can double the power of a rope tackle using a cascading block system. Blocks up to 1" sheave diameter are stainless steel with nickel-plated brass sheaves. Blocks over 1" sheave diameter have removable anodized aluminum sheaves with Delrin® bushings. Micro Kite Blocks are very strong, super-lightweight.
Part No: RF13101-2
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