A caster (also castor according to some dictionaries)is a wheeled device typically mounted to a larger object that enables relatively easy rolling movement of the object. Casters are essentially special housings that include a wheel, facilitating the installation of wheels on objects. Casters are found virtually everywhere, from office desk chairs to shipyards, from hospital beds to automotive factories. They range in size from the very small furniture casters to massive industrial casters. package include : 1x Castor Wheels Screw Mounted Categories: Prayog Blaster, Tyres & Wheels