StarTech.com Heavy Duty Casters for Server Racks/Cabinets, Set of 4 Universal M6 2-inch Caster Wheels Kit, 45x75mm Pattern Casters, Swivel, Bolt Pattern: 45 x 75 mm, Wheel Size: 2in x 1.7in, Steel/Plastic

This set of four M6 2-inch casters, while designed for StarTech.com racks, can be added to the bottom of any server equipment rack, network rack, A/V rack, etc. with a 45mm x 75mm bolt pattern. Ideal for replacing damaged casters or upgrading a standing rack to a rolling rack for additional mobility. RKCASTER2 is backed by a lifetime warranty and free technical support. Replacement Casters For: 4POSTRACK12U 4POSTRACK25U RK1233BKM RK1833BKM RK2433BKM RK2537BKM RK4242BK24 Optional Casters For RK1224WALHM RK1232WALHM RK1520WALHM RK2620WALHM RK616WALM RK9WALM RK4242BK30