Inton Automatic Center Hole Punch with Adjustable Impact and Hardened Steel Body | 5-inch 1.Promotion: good price with 3pcs well-packed step drills(as shown) 2.Great for punching, marking, scribing and staking 3.Use on wood, metal, plastics and other various types of materials 4.Adjustable cap regulates striking force:increased or decreased 5.Chrome plated body and the extremely strong S2 steel tip holds up to hard surface