The updated RP051 from ISC is a 5/8capacity 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 powder coating to enhance the life of the block. The lightweight and strong sides are now made with Hot Forged Technology.
Length: 7.0″ (175mm)
Width: 4.0″ (100mm)
Thickness: 2.5″ (65mm)
Weight: 3.25 lbs (1.5kg)
Sheave Diameter: 2.75″ (70mm)
Maximum Rope Diameter: 5/8″ (16mm)