Features: to install with hacksaw frame use for cutting iron and metal and hard material. Flexibility in body to keep using safety. 1. Material: m2 hss bimetal steel, teeth made of m2, body made of spring steel 2. Size: 12"x1/2"x0.025 300mmx12.5x0.6 3. Tpi: 18t / 24t /32t optional 4. Packing: 100pc/box regular, 1000pc/carton, if need 2pc pack, 3pc, 5pc, 10pc, 50pc or other packing styles, are available for working on.