Sheave, Designed For Fibrous Rope, Max. Cable Size 1/4 in, Rope Diameter 1/4 in, Sheave Outside Dia. 1 in, Sheave Inside Dia. 1/4 in, Sheave Width 11/32 in, Bearing Type Bearingless, Mounting Hole Dia. 1/4 in, Block Material Molded Acetyl, Sheave Material Acetal