Single block with stainless steel cheeks and swivel shackle.

Delrin sheave insures smooth operation and high safe working load.

Sheave Diameter: 1 7/16″, Thickness 3/4″ (19mm), Width 1 9/16″ (40mm), Length 3 25/32″ (96mm), SWL 1,000 lbs (410 kg), Weight 2.7 oz (76g), Max Line 7/16″ (8mm).