StarTech.com Heavy Duty Casters for Server Racks/Cabinets, Set of 4 Universal M6 2-inch Swivel Caster Kit, 45x75mm Pattern, Replacement Caster Wheels for 4 Post Racks, Steel/Plastic – 4-Pack Rolling Caster Kit (RKCASTER2)

INDUSTRY-LEADING SUPPORT: StarTech.com offers lifetime product protection and free lifetime technical support on these server rack casters wheels, and has been the choice of IT professionals and businesses for over 30 years

• TECHNICAL SPECIFICATIONS: Bolt Pattern: 45x75mm (1.8inx2.9in) | Wheel Size: 2inx1.7in (50x43mm) | Material: Cold-Rolled Steel & Plastic | Included Hardware: 18x M6 Screws, 18x M6 Nuts, 18x Washers | Number of Casters Included: Set of 4
• HEAVY DUTY LOAD CAPACITY: Tested to 1.6 times their rated load capacity to ensure performance, these heavy duty casters/wheels, can individually support up to a stationary load of 550 lbs (250 kg) or a rolling load of 165 lbs (75 kg)
• 45MM x 75MM BOLT PATTERN: This caster kit can be used on any rack with a 45mm x 75mm bolt pattern to replace damaged casters and upgrade a floor rack to a rolling rack for additional mobility
• 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