ISC Spring Locking Large 3/4" Rigging Block

The ISC RP057 Large 3/4 inch forged arborist rigging block is manufactured using Hot Forged Technology, combined with high quality materials and components. ISC’s biggest block yet, the RP057 is durable, robust, and rope friendly. With a working load limit of 4000 kg (8800 lbs), this pulley is perfect for those larger rigging jobs.

The ISC Large Aluminum Arborist Rigging Block (3/4" Rope) is designed to work to absorb the huge forces which are created by the harsh dynamics of heavy Arborist work. The rope-friendly edges, large sheave, and retained upper sheave which opens quickly with the twist and push pin are the same as the smaller ISC block, but with an oversized lower sheave and extra strength. Eliminates the chance of dropping a sheave. The lightweight and strong sides are now made with Hot Forged Technology. The side plates are thick aluminum with a powder coating to enhance the life of the block. These blocks are rope friendly, durable and extremely robust.

Select your options and add gear to your cart. Shipping and applicable taxes are calculated at checkout. For questions about your setup, contact our team or call 724-256-8822.