This high quality tool is used to drill holes in a precise diamond shape that is optimal for sewing leather. This simple clamp tool is designed to go around corners, in the evening on the correct number of holes ensuring appropriate size continuity with previously perforated holes and punching corner holes. The blade of this unique clamping iron is the same as that of the other 5mm kyoshin it stitching pins and nippers that make nine holes per inch or four holes per centimeter. Recommended for small cases, handbags and watch straps or similar applicaions where fine seams are required. Model: (5mm) 1/ 2/ 3/ 4/ 6 prongs.