castors 4 Heavy Duty Casters M14 M16 Thread Stem Rubber Silent Universal Swivel 400kg Trolley Industrial Transport Wheel With Brake For Dining Car Mechanical Furniture -Screw

2x swivel with brake and 2x swivel castors, double ball bearing swivel head with 14mm and 16mm bolts Dimensions and Load: 4" Diameter 100mm Thread Size: M14 x 30mm or M16 x 30mm, each set of 4 inches load 880lbs It is made of natural rubber material and runs quietly during operation without noise. Dustproof, anti-winding, built-in ball bearing, strong bearing capacity High quality - The wheels are made of natural rubber and operate very quietly to absorb shock and vibration. Ball bearings and double locking for maximum load carrying capacity and safety. Universal - Wheels can be used in a variety of applications including: flight cases, instrument boxes, display / display equipment, carts, tool boxes, light machinery, equipment racks, mobile workstations, speakers, cabinets, brackets, amplifiers, electrical enclosures, furniture, etc.