The Spyder Bore double sided reciprocating saw blade is versatile and has a rounded tip that allows plunge cuts and eliminates the need for pilot holes. The blade fits all reciprocating saws for general purpose wood cuts. Its top side has 7 teeth per inch and its bottom side has 10 teeth per inch. The product is made of bi-metal with a black finish and is covered by a 1-year warranty. The package contains 3 blades.