The Saw blade is not easy to break, and wear resistant. Selected quality material, fine workmanship, high toughness, high hardness, uniform particles, sharping and with fine durability. The sharp tooth edge makes the cutting smooth, fast and easy. Wear protective equipment when working. Specifications: Number of sets: 4pcs saw blade ①Alloy saw blade Material:Alloy Outer diameter: 63mm Inner Diameter: 16mm Number of Teeth: 12 teeth ②High speed hacksaw blade Material:HSS Outer diameter: 63mm Inner Diameter: 16mm Thickness:0.5mm Number of Teeth: 60 teeth ③Emery saw blade Material:Emery Outer diameter: 60mm Inner Diameter: 16mm ④Resin saw blade Material:Resin Outer diameter: 63mm Inner Diameter: 16mm Package Size: 100*100*20mm/3.94*3.94*0.79in Package Weight: 60g/2.12oz Packing List: 4*Saw Blade