You can produce diamond-shaped stitch holes in your leather with this reverse hole punch from Oka, a Japanese premium leathercraft tool manufacturer. This tool's sharp and hardened prongs allow it to penetrate leather more neatly and professionally. This tool also includes a non-slip handle for added comfort and a firmer grip. To produce unique stitching patterns, use this tool in conjunction with a standard diamond hole punch (available separately).This tool can be used to produce uniform, professional-grade stitching holes in your leather without the need of an awl, and is suitable for both beginners and professionals. Place a board beneath the leather before punching to protect your tool and workbench. Note: This pricking iron will produce holes that appear in the opposite direction when compared to holes made by a regular pricking iron.Size (space between tips of prongs):• 4mmAvailable prong numbers (each sold separately):• 1-prong• 2-prongs• 3-prongs• 4-prongs• 6-prongsWhen punching holes or removing this tool from your leather, keep it perpendicular to the leather and use a soft-headed hammer instead of a metal hammer to avoid damaging the tool. The highly tempered prongs of this superb tool have a dual purpose: They are not only extremely strong and well-suited for penetration, but they also protect your leatherwork from uneven stitching by breaking rather than bending when damaged. This feature prevents the pricking iron from creating uneven stitch holes, which can occur with cheaper pricking irons due to a bent prong.This listing is for Oka 4x4mm Reversed Diamond Hole Leather Stitch Punch only. Photos showing other materials are for illustrative purposes only.Keep out of the reach of children.