Features 1、Caster wheels can easily fix the steel bracket to any desired area without causing vibration, shaking, or squeaking. 2、Whether your workplace needs help to move, our air compressors casters can quickly solve it. 3、Industrial casters are compatible with most air compressors and air pumps for mobile operations. 4、Stable movement without markings, will not harm your wooden floor, no noise, ABS material, better protection of the ground. 5、Casters are widely used, and are also used in workbenches, trolleys, trolleys, shelves, wooden cabinets, furniture, home appliances, etc. Specification Item Type: Caster Wheels Material: ABS Diameter: Approx. 120mm / 4.7in Aperture: Approx. 13mm / 0.5in Thickness: Approx. 30mm / 1.2in Package List 1 x Caster