The Graver is made of high quality Carbon Steel. Its made for strength and hardiness to reduce wear outs and insure the stamp is ready when you need it. The head of the stamp is made of the same quality steel and should give you the most beautiful cross indention every time.Suitable for stamping on Aluminum, Pewter, Alkeme, Copper, Brass, Nickel, Silver. Great stamping set for festival, birthday, anniversary or christmas handmade giftPattern Style:Round Nose / Chain Nose / Flat Nose / Half Round Nose Pattern width:1mm0.039",2mm0.079",3mm0.118,4mm0.157"Set of Round Nose included 1mm / 2mm / 3mmSet of Chain Nose included 1mm / 2mm / 3mmSet of Flat Nose included 1mm / 2mm / 3mm / 4mmSet of Half-Round Nose included 2mm / 3mmLength: 90mm