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) | 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 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 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. Specifications Warranty Information Warranty Lifetime Packaging Information Package Height 3,5 in [9,0 cm] Package Length 4,9 in [12,5 cm] Shipping (Package) Weight 5,6 lb [2,6 kg] Package Width 8,9 in [22,5 cm] Performance Weight Capacity per Caster (Stationary) 552,5 lb [250 kg] Weight Capacity per Caster (Rolling) 165,8 lb [75 kg] General Specifications Wheel Diameter: 50 mm [1.96 in] Physical Characteristics Color Black & Silver Product Height 2,9 in [7,2 cm] Product Length 3,6 in [9,2 cm] Weight of Product 5,2 lb [2,4 kg] Product Width 2,6 in [6,5 cm] Construction Material Steel and Rubber What's in the Box 4 - Included in Package Casters 18 - Included in Package M6 Screws Washers M6 Nuts