Plate Casters Heavy Duty U-Groove Caster Wheel,Sheaves Track,Pulley Directional Roller,Double Bearing Castor,for Iron Doors,Sliding Doors,Wire Rope Rail,Color Plating Castors (Size : Slot widt(Slot wi

Reliable material: The track wheels are made of high-quality 45# steel with fixed guide rails. To reduce vibration and make the surface smooth, every detail of the product is carefully made and durable. Practicality: Simple and practical casters, use gravity to lift work. The purpose is to use ropes or wire ropes to suspend heavy objects or reduce internal and external loads. Multifunctional: Suitable for electric rolling shutter doors, doors, sliding doors, wire rope pulleys, industrial trolleys, assembly containers, equipment and machines, and other applications and projects. Moving casters wheels can be used in homes, schools, garages, shops, trolleys and hospitals. The heavy duty casters can be used to move ottoman, coffee table, plant stands etc.