304 Stainless Steel Pulley Block: Premium U groove wheel is made of 304 stainless steel, corruption resistant and safe, which has higher strength, super capability and high quality enhance anti-deformation U Groove Wheel Size: Wheel diameter is 48mm/1.9 inches, groove width 16mm/0.62 inches, groove depth 7mm/0.28 inches (more size detail can be checked in the picture) 304 Stainless Steel Pulley Block: Rope pulley is made of superior stainless steel and thickened steel plate, which is sturdy and easy to clean. enhances the bearing capacity of the pulley, which can carry up to 880lb Mute Duplex Bearing Design: The pulley is equipped with two ball bearings, which can reduce the friction, make the pulley easier to rotate, and the gaskets are placed in the gaps, will not collide with each other and make metallic noise Strong Load Capacity: The load capacity of 2inch caster wheels is up to 400kg/880lb, and fit for: 3-10mm wire ropes OR hemp ropes Wide Application: The wall mount pulley wheel is widely used for wire rope traction, object handling, DIY attachment for home gym pulley system, ladder lift, gym equipment, inverted track, lifting blocks, rolling gate sliding gate and other outdoor works