4pcs 2 Inch V Type Pulley Roller 304 Stainless Steel Sliding Gate Roller Wheel Bearing For Material Pulleys are removable for easy installation.Compared with other pulleys, pulley wheel support plate is thicker, the wheels are stronger and the bearing capacity is stronger. Stainless steel manufacturing, rust - proof, corrosion - resistant, outdoor use can also prevent pulley corrosion. The thickened steel plate bracket and wheel core can enhance the bearing capacity. A single small pulley can carry 660lb/300kg There are two carbon steel ball bearings inside the pulley, which can reduce the friction of the wheel. The pulley turns more flexibly and has no noise. Product Name: V Type Pulley Installation height: 54mm(2.125in) Wheel diameter: 48mm(1.889in) Wheel thickness: 22mm(0.866in) Groove width: 16 mm(0.629in) Groove depth: 7 mm(0.27in) Load: 300 kg (660 Ib) Application:Generally used as a rail wheel Grooved Wheel size:54 x 22mm Material:steel colour:Silver Package Contents: 4 x V-Type Pulley Only the above package content, other products are not included. Note: Light 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.