This item is a workbench leveling caster. The 360° rotating tops plate is designed with bearings for flexible movement and rotation. More flexible, smooth and labor-saving. It has a simple design, but very practical in use, giving you a . Features -Color:Assorted Color -Material:Nylon, steel, aluminium alloy -Size:7.30X5.80X8.30cm/2.87X2.28X3.26in -Note: 60F - Thickened bracket, more stable and convenient to use, one-time molding, beautiful and strong. - Wide application: suitable for conveyor stands, medical equipment, copiers, printers, modular framing enclosures, etc. - Also suitable for electronic enclosures, manufacturing machinery and automation enclosures, shop equipment, diagnostic equipment, etc. - Made of premium nylon, steel, aluminium alloy materials, not easy to deform, longer life. - is in stable characteristics, high performance and it is in great reliability, simple, easy to use. Package list: 4 x Casters