Versa Tool SB-K16 15 PC Universal Oscillating Saw Blade Set for Fein Multimaster, Rockwell, Sonicrafter, Makita Oscillating Tools (SB3A,3B,3C,3I,1O,1L,1K) Specifications (Type A & C): Material: High Carbon Steel | Application: Wood, Plastic, PVC | TPI (Teeth Per Inch): 19 | Speed (OPM): 25000 | Depth of Cut (Inch): 1.57 Specifications (Type B): Material: Bi-Metal | Application: Metal, Wood | TPI (Teeth Per Inch): 19 | Speed (OPM): 25000 | Depth of Cut (Inch): 1.57 Specifications (Type I): Material: High Speed Steel | Application: Metal, Wood | TPI (Teeth Per Inch): 17 | Speed (OPM): 25000 Specifications (Type K, L): Material: Carbide | Application: Plaster, Porous Concrete Specifications (Type O): Material: Diamond | Application: Fiberglass, Plaster, Porous Concrete