This is a set of three essential leathercraft tools: a diamond chisel. The pitch is 4mm, making it easy to use. Made of high-strength high-carbon steel, the sharpness lasts! The set includes 1, 4, and 6-prong chisels, allowing you to work freely from straight lines to fine curves! Because they have round shafts, they can also be used with drill chuck-type hand press machines. ◎Color Black ◎Pitch 4mm ◎Material High-carbon steel I also have other leathercraft supplies for sale. If you purchase them together, I can negotiate the price, so please take a look if you'd like. Leather tools are here ↓ #YLWorksLeatherTool #Handmade #Leathercraft #Leather #Tools