This brand new Seiwa / Kyoshin Elle 3mm single prong stitching punch (compatible hole with other Seiwa / Kyoshin Elle 3mm irons) is a great method to guarantee your stitching is smooth and uniform.This tool is used to punch holes in the shape of a diamond, which is ideal for sewing leather. This single-prong tool is intended for punching corner holes, going around corners, evening out the correct number of holes, and ensuring proper size continuity with previously punched holes.This single-prong pricking Iron has the same blade as other 3mm Seiwa / Kyoshin Elle Stitching Punches and Nippers that create nine holes per inch or four holes per centimetre. Recommended for small cases, handbags, and watch bands, as well as other applications requiring precise stitching.This Seiwa / Kyoshin Elle pricking iron is excellent as a stitch punch to ensure accurate and easy to sew holes are left in your leather. Please note this sizes are between the points of the prongs, this differs to the way Craft Sha hole are measured (distance between the edges of the prongs). Seiwa pricking irons are compatible with Craft sha using the following data: Craft Sha 1.5mm = Seiwa 3mm, Craft Sha 2mm = Seiwa 4mm, Craft Sha 2.5mm = Seiwa 5mm, Craft Sha 3mm = Seiwa 6mmThis high carbon steel tool is crafted to the best quality in Japan and will last for many years. Available in 1, 2, 3, 4, and 6 prongs that are spaced in 3mm, 4mm, 5mm, and 6mm sizes.Please remember to always use a soft-headed hammer and gently tap this tool into your leatherwork. When removing, please take it out straight, never shifting it side to side to loosen it as this might break the prongs. Avoid using leather that is so thick that it is impossible to remove. A broader pricking iron is advised if you work with leather that is thick enough to make removal difficult.Please note the size is compatible with other 3mm Seiwa / Kyoshin Elle Stitching Punches and nippers, 1.5mm Craft Sha Pricking Irons, or other nine holes per inch diamond hole pricking irons only.