Specifications: Material: High-quality white steel. Solid and strong Prong spacing: 3/4/5/6 mm spacing Color: Silver / Black Notice: 1. In order to prevent the interrupting white steel teeth when you punch it, it must be perpendicular to the perforated leather and don't beat it with a heavy steel hammer, you can use a plastic hammer or nylon hammer. 2. Please be sure to cooperate with a soft cushion to protect the cut tip, such as a rubber board. 3. Because the tip of the tooth is thin and sharp, pay attention to the strength of your hands, first light and back heavy. Especially the 1 prong and 2 prongs. 4. As we all know whether the teeth are polished is one of the biggest factors affecting the cost. WUTA has another leather chisel which is all completely high polished, including teeth between teeth, and all the handles. About this basic leather chisel, In order to control the cost, so that beginners do not have to pay a large cost to learn leather craft working, we have highly polished the teeth outside surface, slightly polished the handle, and there is no polishing between the teeth. We suggest you could highly polish again if you want more smooth teeth. 5、Each product's surface is coated with a rust preventive oil before shipping, Please wipe clean before use. When you no longer use the punch tool, apply some oil to the surface and place it in a dry and ventilated place.