For use with jigsaws with T-shank fittings. The T 144 DF Speed for Hard Wood jigsaw blade makes fast, straight cuts in wood. The finely sharpened teeth are offset, allowing for quick cuts. The tooth strip made of hardened HSS (High-Speed Steel) and BIM (Bimetal) is reinforced with highly elastic HCS (Carbon Steel), making the blade suitable for cutting hard materials such as hardwood and abrasive wood-based materials. This product features a large progressive tooth pitch (4-5.2 mm) and cuts a variety of solid wood materials with a thickness of 5-50 mm.