The Milwaukee® 4" 6 TPI Bi-Metal Jig Saw Blades last longer than high-speed steel or carbon blades. With Milwaukee’s attention to blade material, tooth shape and sharpness, the jig saw blades are ideal for very fast, clean cuts in wood. The T-shank allows for quick installation. Use with Milwaukee jig saw models 6266-6, 6276-6, 6267-20, 6267-21 and other popular brands.