ISC Arborist Block 20mm (3/4") Size:20mm Use just like a regular

Use just like a regular cambium saver

From attaching blocks and pulleys in the canopy of the tree

and the gear where it belongs

The straight blade helps you execute neat

ISC Arborist Block 20mm (3/4") Size:20mm Use just like a regularISC Alloy Arborist Block 20mm (3 4") The updated RP055 from ISC is a 3 4" capacity spring block perfect for the working arborist. Compact design and the unique upper sheave opens and closes and secures easily. Eliminates the chance of dropping a sheave. The rope friendly rounded side plates are thick aluminum with a blue powder coating to enhance the life of the block. MBS: 150KN WLL: 30KN Pulley wheel colour Green Anchor wheel colour Red Body