This kit includes an additional 10 sets of dies to use with any bead roller with a 7/8 inch (22mm) shaft. With these additional dies on your bead roller you can create hemmed edges, offset flanges, contours, deep channels, and style lines. This kit also includes a polyurethane lower “skate board” wheel, which can be used with a variety of upper dies. The dies includes in this kit are inside and outside offset dies, 3/8 and 1/2 inch tipping dies, round and knife edge tipping dies, 180 degree lower die, lower edge forming die and a lower forming die. All are made of CR12 steel with a Rockwell hardness of 35 HRC.