Diablo, 5 pack of 5-1/4" 5/10 TPI bi-metal T-shank jig saw blades for general purpose cuts. Diablo's bi-metal teeth jig saw blades are specifically designed for maximum durability and longer life in wood, metal and plastic applications. These high-performance blades feature an ultra-hardened cutting edge to deliver up to 5 times longer life than standard blades. The optimized blade design and perma-shield non-stick coating reduces heat and pitch build up for effortless, clean cuts. T-shank design fits all combo and most U-shank cordless and corded jig saws.