With these flange nuts mounted on your tube beading machine, you can choose and die tubes into shapes you need. Crafted from solid steel, these flange nuts are tear resistant and heavy duty during pipe bending. Featuring precise design and manufacturing, they will deliver exact sizes and shapes you need. When mounted on the tube beading machine, it helps make metal joint rings on metal tubes quickly and easily. You can find compatible pipe bending machine (SKU 141316) in your shop. Colour: Black Material: Steel Suitable for 20 mm connector of flange machine (sku 141316) Turning die set A (Width: 3 mm) : Nut 1: Outer diameter: 55 mm Inner diameter: 20/30 mm Height: 28 mm Nut 2: Outer diameter: 53 mm Inner diameter: 20/30 mm Height: 25 mm Turning die set B (Width: 4.7 mm) : Nut 1: Outer diameter: 55 mm Inner diameter: 20/30 mm Height: 28 mm Nut 2: Outer diameter: 53 mm Inner diameter: 20/30 mm Height: 25 mm Burring die set : Nut 1: Outer diameter: 53 mm Inner diameter: 20/30 mm Height: