A pack of five BOSCH T144D Speed for Wood Jigsaw Blades for fast straight cutting in hardwood and abrasive woodworking materials. Made from Bi-Metal, the blades have a fully hardened high-speed steel tooth strip bonded with highly elastic high carbon steel. With a large progressive tooth pitch (4-5.2mm), these jigsaw blades can cut a variety of solid wooden materials from 5mm – 50mm in thickness. BOSCH jigsaw blades are suitable for use with jigsaws with T-Shank clamping systems.