... 1.Punching thickness:10mm 2.Main material:steel Mechanical Punching Tool MH-10 Max thickness of thickness ≤10mmPunching range ∠40-∠110 ... , Φ17, Φ19, Φ21mmFeatures:1. The use of leverage, screw force, easy to operate and save effort. the main use of alloy ... made of high-strength alloy steel, light weight, easy to carry.3.Simple structure, easy operation, without power, time saving, effort saving ...