HEAVY DUTY CASTERS/.

"Universal Server Rack Casters | Bolt Pattern: 45mm x 75 mm | Hardware Included 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. StarTech.com Rack Compatibility Replacement Casters For: Optional Casters For*: 4POSTRACK12U RK1224WALHM 4POSTRACK25U RK1232WALHM RK1233BKM RK1520WALHM RK1833BKM RK2620WALHM RK2433BKM RK616WALM RK2537BKM RK9WALM RK4242BK24 RK4242BK30 *Optional casters are sold separately The StarTech.com Advantage - 2-INCH CASTER WHEELS: Four pack of universal swivel casters can be used as replacements on portable/mobile 4-post racks such as RK1833BKM, RK2433BKM, RK4242BK24 or to convert a floor rack to a rolling rack when casters are not included - TECHNICAL SPECIFICATIONS: Bolt Pattern: 45x75mm (1.8""x2.9"") - Wheel Size: 2""x1.7"" (50x43mm)"