Versa Tool MB-K1 Bi-Metal Oscillating Saw Blade Set Compatible With Ridgid Jobmax (MB1A1B1C) Specifications (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 (B): Material: Bi-Metal | Application: Metal, Wood | TPI (Teeth Per Inch): 19 | Speed (OPM): 25000 | Depth of Cut (Inch): 1.5