Diablo's Bi-Metal teeth jig saw blades are specifically designed for maximum durability and longer life in highly abrasive laminate applications. These high-performance blades feature an ultra hardened cutting edge to deliver up to 5X longer life than standard blades. The optimized tooth and blade designs provide fast, effortless and clean finishes. T-shank design fits all combo and most U-shank cordless and corded jig saws.