ISC Arborist Block 20mm (3/4") Size:20mm or attaching to the rigging

or attaching to the rigging line as a spider leg for balancing limbs

Felling storm damaged trees

Use just like a regular cambium saver

Extremely smooth rope passage even when under load

and the gear where it belongs

ISC Arborist Block 20mm (3/4") Size:20mm or attaching to the riggingISC 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