Material:Domestic steel and Japanese steel.Domestic steel will be moreeconomical,but the Japanese steel will be more sharp and not easy to rust.Also,the leather edge will be neater than using the domestic steel.Size 23-20/20-17UsageA.Use the die-cutting machine(click the first image to buy it if you need it)1.Put your stuff on the cutting die,and put them on the nylon pad together2.Use the wrench to adjust the screws,make the height suitable for the cutting die3.Put the things under the pressing plate together4.Press the handle of the machine5.Adjust the angle of the cutting die,and press it again,mae sure that you use your power equality.B.Use the nylon stick to hit the cutting die1.put your leather under the cutting die2.Use nylon stick and hit it along the blade of the cutting dieNoticecustom cutting die is available,you can send us your logo design and size,the price of "custom die"is not the real price,please contact us to confirm price.