Specification Brand : uxcell BulletPoint1 : SPECIFICATION: Wheel Dia: 40mm / 1.5inch ; Capacity: 50kg / 110lb per wheel ; Style: Swivel no Brake; Thread Dia: 9.7mm / 0.38inch ; Thread Length: 25mm / 0.98inch; Package Content: 4 x Swivel Caster. BulletPoint2 : SMOOTH & QUIET ROLLING: The precision ball bearings in the office chair caster swivel and axle provide smooth, easy rolling without any noise. BulletPoint3 : DURABLE MATERIAL: Polyurethane (PU) wheels offer the elasticity of rubber wheels combined with the toughness and durability of metal wheels. Suitable for all floor types. BulletPoint4 : NOTICE: Each caster capacity is 50kg, total capacity for all 4 casters is 150kg (calculated by 3 casters ). Because when the road is uneven, sometimes there will be only 3 casters bearing weight. BulletPoint5 : WIDELY APPLICATION: Perfect casters for small equipment and small space furniture including coffee table, plant stands, bookshelves, shoe bins, shopping carts, workbench. Color : Black GpsrSafetyAttestation : 1 ItemName : uxcell Swivel Casters 1.5 Inch PU M10 x 25mm Threaded Stem Swivel Caster Wheels, 330lb Total Load Capacity, Pack of 4 ItemPackageDimensions_Height : 15.24 centimeters ItemPackageDimensions_Length : 5.08 centimeters ItemPackageDimensions_Width : 10.414 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : stem-casters LoadCapacity : 110.0 pounds Manufacturer : uxcell Material : Polyurethane ModelNumber : a18061100ux0601 MountingType : Stem Mount NumberOfItems : 4 PartNumber : a18061100ux0601 ProductDescription : Description: * Swivel Casters 1.5 Inch PU M10 x 25mm Threaded Stem Swivel Caster Wheels , 4 Pcs. * Polyurethane (PU) wheels offer the elasticity of rubber wheels combined with the toughness and durability of metal wheels. Suitable for all floor types. * Perfect casters for small equipment and small space furniture including coffee table, plant stands, bookshelves, shoe bins, shopping carts, workbench. * Note: Each caster capacity is 50kg, total capacity for all 4 casters is 150kg (calculated by 3 casters ). Because when the road is uneven, sometimes there will be only 3 casters bearing weight.