StarTech.com Heavy Duty Casters for Server Racks/Cabinets - Set of 4 Universal M6 2-inch Caster Kit - Replacement Swivel Caster Wheels (45x75mm pattern) for 4 Post Racks - Steel/Plastic. Type: Castor wheels, Product colour: Black, Stainless steel, Maximum weight capacity: 250 kg. Width: 65 mm, Depth: 92 mm, Height: 72.5 mm. Quantity per pack: 4 pc(s), Package width: 225 mm, Package depth: 125 mm. Master (outer) case width: 410 mm, Master (outer) case length: 245 mm, Master (outer) case height: 390 mm