The most commonly used flat chops are 1 tooth, 2 tooth, 4 tooth, and 6 tooth. The 1-tooth flat cutter is mainly used for right-angle turns or where only a single hole needs to be punched The 2-tooth flat cut is usually used for curved turns where two holes are needed, or for smaller skins 4 teeth are used for straight lines and are the most versatile The 6 teeth are used for punching long straight lines. You can punch 6 holes at a time, which is very convenient and powerful.Precautions for using flat chop:Flat chops are consumables, such as blades and scissors, which will become dull after a long time. Customers must pay attention to the following points when using them: 1. When punching, the flat cutting must be perpendicular to the leather surface to prevent the cutting teeth from being interrupted due to the inclination of the flat cutting 2. It is best not to use an iron hammer when hammering, but a plastic hammer or a wooden hammer 3. It is best to use a soft material under the skin to protect the cutting tip. It is recommended to use a grid plate or a cutting plate 4. When the flat cutting is not in use, a layer of oil can be applied to the cutting room, and a rubber sleeve can be put on for protection and maintenance. Size: 4MM (1+2+4+6) Shipping Color: Silver Shipping Quantity: 4 pieces/set