3 Inch Swivel Caster Wheels Set of 4, Locking Casters Heavy Duty Total Capacity 330lbs, Metric M8-1.25 Threaded Stem PU Casters with Brake, Castors for Carpet Hardwood Floors Workbench Bed Frame.

Standard Metric Size-Stem size: M8 (8 mm)-1.25×1″, Stem diameter: 8mm, Stem length:25mm, Wheel diameter: 3″. Each caster kit includes 4 wheels with locking brakes, 4 threaded embedded parts, 4 nuts, 4 washers and 1 wrench; No Noise, Non-Marking-the Precise ball bearings, 360 degree swivel and rubber wheels make it rolling smooth and quiet, bid farewell to harsh noise, suitable for outdoor, hardwood floors and carpet; Heavy Duty-Steel Industrial threaded stem casters support 330lbs capacity each set; Lockable Brakes-The safety dual locking brakes lock both the swivel and wheels efficiently; Wide Range of Uses-Replacements for office chairs, suitable for furniture, shopping carts, dolly, workbench and trolley.