Pulley Block Product Type Pulley Block Pulley Type Fixed Mount Type Upright Mount Working Load Limit 685 lb Operation Pulling Attachment Type Fixed Eye Compatible Rope Diameter 1/4 in Sheave Inside Diameter 2 in Sheave Depth 7/16 in Sheave Outside Diameter 2 1/2 in Compatible Rope Type Wire Rope Bearing Type Sleeve Attachment Inside Diameter 3/8 in Housing Material Carbon Steel Mounting Hole Diameter 3/8 in Number of Grooves 1 Sheave Material Steel Overall Height 4 1/4 in