THEY STACK UP BETTER: For wood with nails, metal pipe, angles, and a variety of specialty applications from drywall to drain pipe, BiMetal By Malco stacks up best against the rest. These shatterproof blades are formulated from a premium metal composition consisting of a High Speed Steel cutting edge micro welded to a flexible High Carbon Steel back. Wood Cutting BiMetal blades are available in a wide variety of profiles and tooth combinations to match cutting speed, plus control and maneuverability needed for the job. Wide 3/4? (19.1 mm) profiles on Metal Cutting BiMetal combine with superior manufacturing processes to outperform and outlast all other similar blades in head to head comparisons.