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ISC 4.4 Ton Giant Spring Lock Aluminum Block. Works with up to 3/4in. Rope

ISC 4.4 Ton Giant Spring Lock Aluminum Block. Works with up to 3/4in. Rope
Item #: 21862
$265.00

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4-5/8in sheave, up to 3/4in rope capacity, weighs 7.7 lbs, 4.4 ton working load limit. Green sheave (3/4in rope capacity) for easy identification.

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Description

Details

Spring lock blocks are popular among riggers for their high strength-to-weight ratio and quick-twist rope access. Solid aluminum-alloy cheek plates, bushing, and sheave are supported by stainless-steel axles. For those concerned about aluminum not withstanding the punishment of steel, we have no record of a fracture complaint in 3 years of production. Spring lock blocks have broad cheek plates to protect running lines, and large sheaves to minimize bend in rigging lines (providing 4:1 up to 9:1 ratios).
Additional Information

Additional Information

Weight 7.70 lb.
Brand ISC
Color Yellow/Green
Diameter No
Strand Count No
Certifications YES
Material Aluminum
Sheave Diameter 4 5/8 in.
Working Load Limit 8800 lbs (31.1 kN)
MPN RP057A1
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