Michihamono's leathercraft corner punch is perfect for removing the square corners from your leather, giving you a smooth rounded corner. With the blade forged from blue steel, this tool will slice easily through leather. You don't need a hammer or other similar tools to use this tool because of the outstanding sharpness of the Japanese steel blade, and the generous size of the handle giving you excellent control. By pressing with one or both hands, the leather can be cut cleanly and with minimal force. The handle is constructed of Japanese zelkova and is easy to grip, making your leathercrafting even more comfortable and efficient.Made specifically for rounding corners of your leather, this leathercraft tool is razor sharp, guaranteeing that the corners of your leathercraft are cut neatly with the tool's 4.5mm broad edge blade.Approximate Dimensions & Product Data:• Blade Material: Blue Steel (Aogami No. 2)• Blade Length: 50mm• Blade Width: 4.5mm• Handle Material: Japanese Zelkova• Handle Length: 110mmAvailable Sizes (each sold separately):• 4.5mm (3R)• 9mm (5R)• 12mm (10R)• 25mm (15R)• 40mm (25R)* The "R" in the size indicates the radius (mm) of the round cutting edge.* This listing is for the 4.5mm (3R) punching tool only. The leather materials and other tools shown are for illustrative purposes only.Please Note: The cutting edge of this tool is sharp, keep away from the reach of children.