for Powertec 148020 Ridgid JP0610 Jointer Knives 6 1/8 x 3/4 x 1/8" Also fit Freud C410, Jet JJ-6, Powermatic 6", Delta 37-280, 37-195, 37-275X Set of 3 Planer Knives Made by Xcalibur Tooling