Online Best Service 3" Swivel Caster Wheels Rubber Base with Top Plate & Bearing Heavy Duty , Pack of 4 Rotate 360 degrees. Smooth & Silent & Sturdy. HEAVY DUTY Capacity: 250lbs each. Plate Size: , 2.6" (66mm) x 3.2" (82mm). Hole center to hole center: 1.6" (42mm) x 2.2"( 56mm) Mounting hole dimensions: 0.33" (8.4mm) x 0.46" (11.7mm). Wheel Dia.: 3" (76mm). Wheel Width: 0.9" (23mm) Wheel Material: Rubber. Overall Height: 3.9" (100mm). Color Wheel: Black Ball bearings: Double ball bearings. Includes: 4 pack 3" no brake caster