Luxor's durable eight-inch Pneumatic Rubber Caster Set makes it a cinch to move your Luxor carts and computer workstations. These large pneumatic rubber wheels let you roll your equipment over uneven flooring, bumps and carpet with more stability than standard plastic casters. Each set includes four swiveling casters, two of which lock to keep cargo secure. These sturdy casters will stand up to years of use in your office or facility.