Imperial Blades' One Fit™ 2-1/2" Speartooth Fast Cut Wood Blade is composed of high carbon steel (HCS) for medium-duty wood applications. The newly redesigned IBOA250 Speartooth is best for aggressive material removal and cuts up to 2X faster than the previous model. The coarse tooth design and wide blade body are ideal for cutting round/curved surfaces without slipping. Recommended applications are: Wood, PVC, Drywall and more. Popular projects include framing, cutting PVC and construction. Not designed for metal contact. One Fit™ anchor fits majority of non-Starlock multi-tools: Milwaukee, Ridgid, Ryobi, Bosch, DeWalt, Dremel, Fein, Makita, Rockwell and more.