Seiwa Pro Tool European Stitching Chisel No. Ⅰ, 3mm width, 4 prongs. Brand new, unused. Total length approximately 110mm. 1. "Quenched" for no blade "bending or deformation." 2. "Carefully polished" blades for "exceptional sharpness." 3. "R" grooves on the blades provide strength and durability, allowing holes to be punched easily even in thick leather. 4. The sharp blade tips create beautiful diamond-shaped holes. 5. The handle has a checkered non-slip grip for secure handling. * The spacing between the prongs is indicated by the width (pitch/mm). This is also stamped on the handle. This is a tool for making holes for hand-sewing.