Standard Metric Size—Stem size: M8 (8 mm)-1.25×1″, Stem diameter: 8mm, Stem length:25mm, Wheel diameter: 2″. 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 200lbs 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.