Features include Manual bead roller is made from high quality steel & aluminum components and is a sturdy / cost effective tool that makes it easy to add a professional looking bead to aluminum tubing. It comes complete with everything you need straight out of the box, including a convenient carry case. Great for aluminum up to 16 gauge wall thickness (0.065” to 1.65mm). The bead roller produces a bead that is approximately 2mm tall and 6.5mm wide. Product Description Size: minimum tube diameter to be used is 3/4″ OD Factory Sealed – Brand new in box Made from the highest quality steel and aluminum materials. .