Pulley Block, Product Type Pulley Block, Pulley Type Swivel, Mount Type Not Applicable, Working Load Limit 3,300 lb, Operation Pulling, Attachment Type Shackle, Compatible Rope Diameter 5/16 in, Sheave Inside Diameter 2 1/4 in, Sheave Depth 1 1/16 in, Sheave Outside Diameter 3 in, Compatible Rope Type Wire Rope, Bearing Type Sleeve, Attachment Inside Diameter 5/8 in, Housing Material 316 Stainless Steel, Mounting Hole Diameter Not Applicable, Number of Grooves 1, Sheave Material Aluminum