The T 121 BF Speed metal jigsaw blade makes fast, straight cuts in metal. The blade's bevel and thin cutting design allow for the highest cutting speeds. The patented tooth geometry and the combination of aggressive, robust teeth further increase cutting speed. The milled, wavy teeth are designed for cutting metal sheets. The tooth strip made of hardened HSS (high-speed steel) and BIM (bimetal) is reinforced with highly elastic HCS (carbon steel), reducing the risk of breakage and making the blade break-resistant. This ensures both sufficient strength and the necessary flexibility to cut perforated steel sheets (standard thickness). The jigsaw blade is equipped with a fine tooth pitch (2 mm) to cut medium-thick metal sheets with a thickness of 2.5-6 mm.