Conveyer Sheave 4,000 Pound Capacity 48" (1219.0 mm) with 10 Sheave Wheels. Welded steel frame with a series of sheaves to form a large radius. Yokes with cast steel closure-type hooks with a 1" (25.4 mm) opening. 5" (127 mm) wide aluminum alloy sheaves. Use with any cable puller whose maximum pulling force is 4,000 lbs. (17.8 kN) or less.