Package contents: 4 axle/axle adjustment rings. Dimensions: 20 x 32 x 14 mm (inside x outside x width). Adjustment rings are perfect for attaching unicycle tires to axle tubes or axles. The wavy ring is attached with daughter screws. PREMIUM MATERIAL: The adjustment ring is made of high quality steel. Galvanized surface. The corrugated ring is protected against rust and corrosion, making it ideal for outdoor use. Unique design: Set screw type corrugated tape improves retention when corrugated material is softer than set screw material, supports low axial loads and is easy to position. The collar has a socket head cap screw that secures the collar to the stem. The nut is made of steel, strong and well designed for easy installation. Wide range of applications: The adjustment ring is versatile and can also be used in industry thanks to its excellent quality. Assembly of carts, karts, trolleys or similar equipment. Adjustment ring. Set of 4 cylinder adjustment rings, 20 mm, for trolleys, corrugated connections Features: Type: adjustment ring, color: steel, material: steel, finish: galvanized, dimensions: 20 x 32 x 14 mm (inner x outer x width). Adjustable ring screw stop ring. High quality materials. The thrust ring is made of high quality carbon steel. The drill is not damaged during use, durable and reusable. 20mm adjustment ring - Steel shank/shank. Improved design. Grub screws are recessed to prevent injury during operation. Adjustment rings should not be installed on shaft bends, as this will cause deformation. Shaft diameter 20 mm Quantity: 4 pieces Size: Internal diameter : 20 mm External diameter: 32 mm Drilling depth limiter, the Allen key allows you to adjust and unload the limiter. Stop ring, clamping device, drilling depth control device. It is mainly used to fix the drill bit, limit the hole depth, and make the hole depth consistent. 20mm adjustment ring. Versatile: The adjustment ring is versatile and high quality for industrial use. By carrier, kart, bus, trolley or other. Quantity delivered: 4 pieces Product color: silver Product size: 20 x 32 x 14mm Note: Manual measurement, please allow 1-3cm error.