Hacksaw blade is made from bi-metal, which is a combination of high-speed steel (HSS) teeth and a flexible spring steel back. This construction ensures superior performance and durability., Bi-Metal Hacksaw Blade is designed to cut through a wide range of materials, including metal, plastic, wood, and other materials encountered in DIY projects and professional applications., Bi-metal material enhances the blade's longevity, providing extended cutting life and resisting premature wear.