Measurements -Overall Height: 70mm (without screw) -Wheel Size: Dia.: 50mm / 2", Width: 21mm -M8 Screw Fixing: Dia.: 8mm, Lenght: 50mm Features -Made of heavy duty steel and TPE Rubber -Double ball bearing swivel head -Wheel Type : Double ball bearing, non-marking Rubber material -Threaded M8 screw bolt fixing -Comes with 4 spare M8 nuts -4x swivel with brake -Load Rating: 200kg (50kg each) -Ideal for a huge variety of uses from DIY to industrial applications (home, schools, shops & hospitals) These heavy duty swivel & braked bolt fixing castors with threaded M8 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. Package Contents -4 x Swivel with Brake Wheels -4 x M8 Nuts