This is a set of four diamond chisels, essential for leathercraft. They have a user-friendly 4mm pitch. Made of high-strength high-carbon steel, they maintain their sharpness! The set includes 1- to 6-prong chisels, allowing you to work freely from straight lines to fine curves! The round shafts also allow them to be used with drill chuck-type hand presses. ◎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