Heavy Duty Swivel Caster Wheels 4 Inch PU with Dual Locking Brake M16 Threaded Stem for Workbench and Trolley

4 inch (100 mm) PU swivel casters with threaded stem and brake. Durable, quiet, and suitable for most floors. Sold as a set of four. Key benefits Smooth, quiet movement: PU wheel with PVC tread is wear resistant and designed to run quietly without scratching floors. Strong load capacity: Galvanized steel bracket and double bearing swivel deliver stable support under heavy loads. Secure positioning: Each caster includes an independent brake that locks the wheel and swivel simultaneously to prevent unwanted movement. Versatile and shock absorbing: Non slip and shock absorbing properties make these casters suitable for a wide range of indoor applications. Main specifications Wheel material: PU polyurethane with PVC wheel surface Bracket material: Galvanized steel plate Installation type: Threaded rod Thread diameter: 16 mm (0.63 in) Thread length: 80 mm (3.15 in) Available caster diameters: 75 mm, 100 mm, 125 mm (3 in, 4 in, 5 in) This listing: 100 mm (4 in) casters Fourwheel load capacity: 300 kg, 360 kg, 450 kg per set depending on diameter (660 LBS, 790 LBS, 990 LBS) Rotation: 360 degree swivel with double bearings Color: One color Features that matter Heavy duty construction: Galvanized steel body for stability and durability during repeated use under load. Floor friendly: PVC tread reduces marking and rolling noise on tile, wood, vinyl, and concrete. Reliable braking: Brake locks both wheel and swivel for safe stopping and stationary positioning. Low maintenance: PU material resists wear and offers long service life under normal conditions. Typical applications and use scenarios Workshop workbench: Move a heavy workbench easily then lock casters in place for stable use during tasks. Retail displays and trolleys: Smooth, quiet rolling and secure brakes make these casters suitable for displays, stock trolleys, and merchandizing carts. Transport cases and equipment racks: Use on flight cases, instrument cases, or equipment cabinets to absorb shocks during movement and lock them for transport staging. Package contents 4 x threaded stem swivel casters with brakes (100 mm 4 in version). Threaded stem diameter 16 mm, length 80 mm. Compatibility and installation Designed for installation using a 16 mm threaded rod mounting hole. Suitable for furniture, workbenches, carts, cabinets, displays, and most industrial or residential equipment that accepts a threaded stem. Choose these casters when you need quiet operation, reliable braking, and a sturdy mounting solution for medium to heavy loads.