Made of heavy duty steel and polyurethane Double ball bearing swivel head, threaded M12 screw bolt fixing Wheel Type : plain bearing, non-marking polyurethane material 2x swivel with brake and 2x swivel castor wheels Load Rating: 200kg (50kg each) These heavy duty swivel & braked bolt fixing castors with threaded M12 screw bolt fixing and non-marking polyurethane wheels. Ideal for a huge variety of uses from DIY to industrial applications home, schools, shops & hospitals etc. Features -Made of heavy duty steel and polyurethane -Double ball bearing swivel head -Wheel Type : plain bearing, non-marking polyurethane material -Threaded M12 screw bolt fixing -Comes with 4 spare M12 nuts -2x swivel with brake and 2x swivel castor wheels -Load Rating: 200kg (50kg each) -Ideal for a huge variety of uses from DIY to industrial applications (home, schools, shops & hospitals) Measurements -Overall Height: 100mm (without screw) -Wheel Size: Dia.: 75mm / 3', Width: 20mm -M12 Screw Fixing: Dia.: 12mm, Lenght: 30mm Package Contents -2 x Swivel with Brake Wheels -2 x Swivel Wheels -4 x M12 Nuts