Professional French (European) style craft sewing laage punch chisel tool. Material: dc53 cold-work die steel dc53 cold-work die steel, specially applied in the manufacture of punch moulds. This scissor is strong in hardness with high tenacity and large anti-rust property.We adopt this kind of steel to make sure that our scissor is of the best quality. Prong spacing / prong width: 2.45mm/145mm, 2.7mm/1.5mm, 3.0mm/1.6mm, 3.38mm/1.7mm, 3.85mm/1.8mm, 4.0mm/1.9mm. Lip thickness prong: 0.2mm. Scissors are with averse teeth or inverted teeth. When you look down at holes perforated by avers scissors, from left to right the hole goes up. Holes perforated by inverted scissors, from left to right, it descends downwards. The aim is to meet the higher requirements for punching and sewing. In addition, with these two types of direction, you can drill holes on both sides of a leather. Perfectly designed and polished teeth, comfortable to hold. Fine resistance to abrasion and impact. A strong texture makes distortion and rupture difficult. A pointed rhombus tooth is useful for striking quickly and effortlessly. Good choice for the professional craftsman.