Diablo's Bi-Metal teeth jig saw blades are specifically designed for maximum durability, longer life and speed in medium metal applications ranging from 1/64 to 3/64 in thickness. These high-performance blades feature an ultra hardened cutting edge to deliver up to 5X longer life than standard blades. A back taper blade design and Perma-SHIELD® non-stick coating reduces heat and pitch build up for fast and clean cuts in metal. T-shank design fits all combo and most U-shank cordless and corded jig saws.