To outfit your Reciprocating Saw the Hyper Tough 9 piece blade set is a great place to start. These are high quality blades for cutting wood, metal, wood with nails, tree limbs, PVC, and other materials. The blades also fit all major brand reciprocating saws. The 9 piece set includes three, 24 teeth per inch, 4 inch Bi-metal blades for cutting wood and metal. The next blades are three 10 teeth per inch, 6 inch wood cutting blades. Lastly in the set there are three 6 teeth per inch, 8 inch blades for wood. These blades are constructed from high quality chrome venadium steel for lasting strength and durability. The cutting teeth are patterned for their specific purpose from smooth cutting in metal, wood or plastic, to an aggressive pattern for fast cutting on large items. Includes: 3 - 4in. Wood & Metal Cutting Bi- Metal Blades, 24 TPI 3 - 6in. Wood Cutting Cr-V Blades, 10 TPI 3 - 8in. Wood Cutting Cr-V Blades, 6 TPI