■ Seiwa Leathercraft Tools 6-Prong Diamond Stitching Chisel 3mm Width ■ Size: Approximately 11cm in total length "Quenching" process is applied, preventing "bending and deformation" of the blade tip. The blade's "exceptional sharpness" is achieved by "carefully polishing" it. The "R" groove on the blade provides strength and durability to the blade tip, allowing you to easily punch holes even in thick leather. The sharp blade tip creates beautiful diamond-shaped holes. The handle has a checkered non-slip grip to prevent slipping when holding the diamond chisel.