Type: U Type Single Wheel Pulley Block Overall Height: 60mm Overall Base Size: 68x30mm U-Type Groove Depth: 6mm U-Type Groove :inner width:16mm,outer width:22mm Wheel Diameter: 48mm Attention: The own loadbearing of the pulley is 800 pounds. But there be a depending on the material and angle used. Used on the wood at vertical angle, the loadbearing is about 200 pounds. It can withstand 800 pounds at a 45 degree angle on a concrete wall. colour:silver Material: steel Package included 1 x U-Type Single Wheel Pulley Block Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.