Kawasaki 841583 8-Inch Bi-Metal Reciprocating Saw Blade Set, 5-Piece Offically licensed by Kawasaki Made using the highest quality standards Tested for durability For use on reciprocating saws that accept 1/2 inch universal shank blades Bi-Metal (Wood - 10 TPI) - 5 Piece Set Bi-metal reciprocating saw blades last 5 times longer than high carbon steel blades Cuts nail embedded wood, ferrous and non-ferrous metals 1/8 inch and up