Double block with swivel Carbo 57mm. Ball bearings, sheave and sideplates UV stabilized with black additive for a maximum protection. The high-load 57mm Carbo has a broad working range. For 7/16'' rope. Working load: 1584 lb. Sheave: Long-glass reinforced engineered nylon. Ball bearings: Engineered plastic in fitted ball races. Sheave size: 2 1/4'' (57mm). Line diameter: 7/16'' max. Cheek material finish: Long-glass reinforced engineered nylon. Shackle/strap: Stainless swivel shackle.
