Specifications: Bolt diameter: 10 mm (M10). Nut size: M10 - 1.5 mm (included). Wheel size: 5 cm. Nuts included. Type: Swivel Casters with Stem. This is a set of 4 Heavy Duty Rubber and Polyurethane Swivel Casters with Brakes and Fixings. /> 360 degree rotation, threaded rod, ball bearing, light weight, industrial design brake, freewheels. Widely used for furniture, hand carts, shopping carts and other types of industrial equipment.