For use with jigsaws with T-Shank clamping systems. The T 144 DF Speed for Hard Wood Jigsaw Blade delivers fast straight cuts in wood. Its sharp-ground, side-set teeth make fast cuts. Made from BIM (bi-metal), the blade's fully hardened HSS (high-speed steel) tooth strip is bonded with its highly elastic HCS (high carbon steel) body, making it appropriate for cutting hard materials such as hardwood and abrasive woodworking materials. This product has a large progressive tooth pitch (4-5.2 mm) and cuts a variety of solid wooden materials with 5-50 mm thickness.