VIVO Caster Wheels: Create your own TV cart, mobile workstation, and more with 1.5 durable caster wheels (set of 4). Safe for all types of floors, these casters are great for both home and office use Compatibility: Fits products using M8 threaded mounts on the feet. Casters use an M8 metric bolt, Thread (M8-1.25mm). Stem Length: 15mm / 0.6, Bolt Diameter: 8mm, Wheel Diameter: 38mm / 1.5. Fits VIVO 2-leg frames and desks in compatibility list below