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RONSTAN
Series 50 All-Purpose Blocks

Strong, durable and economical blocks with a unique captive lock universal head fitting that allows the blocks to be fixed in either of two planes, or to swivel freely. Becket pins are removable for fitting spliced lines. White UV-stabilized acetal sheaves run on low-fiction, very low-maintenance solid bearings. Loads are transferred directly from the sheave axle to the head post by the one-piece 316 stainless steel load straps. Hi-load (Model 160932) is wire rope-compatible.

  • Sheave: UV stabilized Acetal
  • Bearings: Low-friction plain bearings
  • Sheave Size: 2" (50mm)
  • Line Diameter: 1/2" max.
  • Cheek Material/Finish: Stainless and fiber-reinforced textured Zytel
  • Shackle/Strap Type: Universal head shackle. Either locks (0° or 90°) or swivels
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
All-Purpose Block, Single, Hi-Load, 1,764lb. SWL, 4.1oz. 160833 RF50100HL
In stock online.

$56.87

All-Purpose Block, Single Turning, Hi-Load, 1,764lb. SWL, 4.0oz. 160932 RF50171HL
In stock online.

$62.01

All-Purpose Block, Single, 1,650lb. SWL, 4.1oz. 149687 RF51100
In stock online.

$29.96

All-Purpose Block, Single, Loop Top, 1,650lb. SWL, 3.4oz. 149703 RF51101
In stock online.

$28.90

All-Purpose Block, Single/Becket, 1,650lb. SWL, 4.7oz. 149943 RF51110
In stock online.

$42.46

All-Purpose Block, Single/Becket, Loop, 1,650lb. SWL, 4.0oz. 149950 RF51111
In stock online.

$35.87

All-Purpose Block, Double, 2,200lb. SWL, 8.9oz. 149968 RF51200
In stock online.

$63.71

All-Purpose Block, Double/Becket, 2,200lb. SWL, 9.5oz. 149976 RF51210
In stock online.

$72.21

All-Purpose Block, Triple, 2,650lb. SWL, 2.9oz. 149984 RF51300
In stock online.

$84.96

All-Purpose Block, Fiddle, 1,650lb. SWL, 5.9oz. 149992 RF51500
In stock online.

$56.87

All-Purpose Block, Fiddle/Becket, 1,650lb. SWL, 6.2oz. 150008 RF51510
In stock online.

$62.01

All-Purpose Block, Fiddle/Becket, Cleat, 1,650lb. SWL, 11.1oz. 150016 RF51530
In stock online.

$110.46

Product Description

Strong, durable and economical blocks with a unique captive lock universal head fitting that allows the blocks to be fixed in either of two planes, or to swivel freely. Becket pins are removable for fitting spliced lines. White UV-stabilized acetal sheaves run on low-fiction, very low-maintenance solid bearings. Loads are transferred directly from the sheave axle to the head post by the one-piece 316 stainless steel load straps. Hi-load (Model 160932) is wire rope-compatible.

  • Sheave: UV stabilized Acetal
  • Bearings: Low-friction plain bearings
  • Sheave Size: 2" (50mm)
  • Line Diameter: 1/2" max.
  • Cheek Material/Finish: Stainless and fiber-reinforced textured Zytel
  • Shackle/Strap Type: Universal head shackle. Either locks (0° or 90°) or swivels

Specs

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REVIEW SNAPSHOT®

by PowerReviews
RonstanSeries 50 All-Purpose Blocks
 
4.1

(based on 7 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Well built / quality (6)
  • Easy to use (5)
  • Easy to install (3)

Cons

No Cons

Best Uses

  • Sailing (7)
    • Reviewer Profile:
    • Casual/ recreational (3)

Reviewed by 7 customers

Displaying reviews 1-7

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5.0

Quality materails and built to handle heavy working loads.

By trimmer

from Annapolis Md

About Me Professional

Verified Buyer

Pros

  • Attractive Design
  • Easy To Install
  • Easy To Use
  • Quality Construction

Cons

    Best Uses

    • Large Boats
    • Sailing

    Comments about Series 50 All-Purpose Blocks:

    turning block for jib sheet

    • Was this a gift?:
    • No
     
    5.0

    Good block

    By Jim

    from Virginia

    About Me Advanced

    Verified Buyer

    Pros

    • Quality Construction

    Cons

      Best Uses

      • Sailing

      Comments about Series 50 All-Purpose Blocks:

      Nice ball bearing block

      • Was this a gift?:
      • No
       
      5.0

      Nice block at a reasonable price

      By Bill

      from Gulf Shores, Alabama

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Attractive Design
      • Easy To Install
      • Easy To Use

      Cons

        Best Uses

        • Sailing

        Comments about Series 50 All-Purpose Blocks:

        Use blocks to replace worn out Shaffer blocks use with 1/2 roller reefing line on foresail. Made a big difference in reducing drag on the line during unfurling of the foresail.

        Service and delivery comments:

        Prompt delivery with a great product.

         
        2.0

        damaged block

        By Lenny

        from West Palm Beach, FL

        About Me Professional

        Verified Buyer

        Pros

        • Quality Construction

        Cons

          Best Uses

          • Sailing

          Comments about Series 50 All-Purpose Blocks:

          The block suits its purpose very well. The block delivered had deep scour groves in the cheek.

           
          4.0

          Simple, but durable

          By The Adventure

          from Sarasota fl

          About Me Casual/ Recreational

          Verified Reviewer

          Pros

          • Easy To Install
          • Easy To Use
          • Quality Construction

          Cons

            Best Uses

            • Sailing

            Comments about Series 50 All-Purpose Blocks:

            It was hard to find in stores, but once I found it and purchased...It was ready to go, simple

             
            4.0

            Good Value for Money

            By Small Axe

            from Naramata, BC

            About Me Casual/ Recreational

            Verified Buyer

            Pros

            • Easy To Use
            • Quality Construction

            Cons

              Best Uses

              • Sailing
              • Small Boats

              Comments about Series 50 All-Purpose Blocks:

              If you are a recreational sailor this product strikes the right balance between quality and price.

               
              4.0

              Does the job

              By fishnski

              from CB, NC

              About Me Advanced

              Verified Buyer

              Pros

              • Easy To Use
              • Quality Construction

              Cons

              • Picture does not match

              Best Uses

              • Personal Watercraft
              • Sailing
              • Small Boats

              Comments about Series 50 All-Purpose Blocks:

              The product works fine. The only issue was the picture in the catalog does not match the unit but it does the job for me in docking my boat

              Displaying reviews 1-7

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