HARKEN
57mm Black Magic® AirBlocks®

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Description	WM Model#	MFG Part#	Availability	Price USD
57mm Black Magic AirBlock, Single, 1,655lb. SWL, 5.0oz.	583783	1950	In Stock	$133.94
57mm AirBlock, Single Swivel with Becket, 1,655lb. SWL, 5.5oz.	583791	1951	In Stock	$168.52
57mm Black Magic AirBlock, Double Swivel, 2,755lb. SWL, 10.1oz.	1975739	1952	In Stock	$263.21
57mm Black Magic AirBlock, High-Load Single Swivel, 2,500lb. SWL, 5.0oz.	189428	1958	In Stock	$151.18
57mm Black Magic AirBlock, Single Swivel Becket, 1,655lb. SWL, 5.5oz.	6580716	1959	In Stock	$184.27
57mm Black Magic AirBlock, High-Load Strap Head with Becket, 2,500lb. SWL, 3.6oz.	2785699	1961	Usually ships within 5 to 8 days	$318.34
57mm Black Magic AirBlock, Single Foot, 2,500lb. SWL, 4.2oz.	583825	1963	Hot Seller. Temporarily out-of-stock. Order Now!	$139.92
57mm Black Magic AirBlock, Flip-Flop with Lockoff, 2,500lb. SWL, 11.8oz.	9485780	3194	In Stock	$303.95

57mm Black Magic AirBlocks

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Description

Specs

The West Advisor

Reviews

57mm Black Magic AirBlocks

Strong, lightweight aluminum blocks for offshore boats

Used for sheets, halyards, running backstays and control lines on offshore boats, these strong, lightweight blocks are made of sculpted aluminum with Torlon rollers and carbon black balls for strength and UV protection.

Sheave: 6061-T6 Hardkote anodized aluminum
Cheek Material/Finish: 6160-T6 Hardkote anodized aluminum
Sheave Size: 57mm (2-1/4")
Line Dia: 7/16" (12mm) max
Construction: Three fasteners for quick disassembly. Plastic isolators separate dissimilar metals
Three-way head system. Swivels or can be locked in front/side position; 1/4" pin

57mm Black Magic AirBlocks

Product Specs

The West Advisor

The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.

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HARKEN57mm Black Magic® AirBlocks®

We Won't Be Beat—Low Price Guarantee

57mm Black Magic AirBlocks

57mm Black Magic AirBlocks

Product Specs

The West Advisor

HARKEN
57mm Black Magic® AirBlocks®