The T 118 A Basic for Metal Jigsaw Blade makes straight cuts in metal. Its milled, wavy-set teeth are ideal for cuts without special requirements. The fully hardened, high-grade HSS (high-speed steel) blade material is appropriate for cutting standard-strength, non-perforated metal sheets. Additionally, the bladeâ€™s very fine progressive tooth pitch (1.1-1.5 mm) cuts very thin solid sheet metals with 1-3 mm thickness. For use with jigsaws with T-Shank clamping systems.