Diablo’s bi-metal teeth jig saw blades are specifically designed for maximum precision and control in intricate curved cuts in wood. 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 design make effortless and clean finishes. T-shank design fits all combo and most U-shank cordless and corded jig saws. Ultra-hardened cutting edge for up to 5X longer life than standard blades Optimized tooth design for clean, intricate curved cuts Blade design for maximum precision and control T-shank design fits all combo and most U-shank jig saws Maximum performance in cordless and corded jig saws