Features: brand new and high quality It is made of durable and hard metal material. Rotary pulley has a wide range of applications, and can be used with internal or external ropes or flexible sliding pulley ropes. Strong, reliable, waterproof, rust proof, high temperature resistant, corrosion resistant, which will provide you with the best working comfort. The groove wheel is equipped with ultra quiet ball bearings, which are firmly locked by self-locking anti-skid nuts, heavy load rods and bearings. The rotating top ring is easy to operate the rope, while the soft roller can provide excellent rope traction. Specifications: Material: Plastic+Metal Color: Black Hole Diameter: approx. 20.5mm/0.80in Total Length: approx.150mm/6.10in Disc Diameter: approx. 90mm/3.54in Disc Width: approx. 31.5mm/1.24in Package: 1Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1Pc x Pulley