T 144 DF Speed for Hard Wood Jigsaw Blade delivers fast straight cuts in wood Sharp-ground, side-set teeth make fast cuts Bi-metal, fully hardened high-speed steel tooth strip and highly elastic carbon steel body for cutting hard materials Fits all T-shank jigsaws Bi-metal, fully hardened high-speed steel tooth strip and highly elastic carbon steel body for cutting hard materials Large progressive tooth pitch (4-5.2 mm) cuts a variety of solid wooden materials with 5-50 mm thickness