Seiwa Pro Tool European Prong Chisel, Single Prong, all widths are the same. Brand new, unused. Total length is approximately 110mm. 1. "Quenched" for no blade "bending or deformation." 2. "Carefully polished" blades for "exceptional sharpness." 3. "R" grooves on the blade provide strength and durability, allowing holes to be made easily even in thick leather. 4. The sharp blade creates beautiful diamond-shaped holes. 5. The handle has a checkered non-slip grip to prevent slipping when using the chisel. \* The spacing between the prongs is indicated by width (pitch/mm). It is also stamped on the handle. This is a tool for making holes for hand-sewn stitches.