JOINTER KNIVES / BLADES 8 INCH FOR DELTA DJ-20, WMUS205213-3D 8-1/16" x 13/16" x 1/8" Planer blades set of 3 8-1/16" Jointer blades for Delta JET Jointer DJ-20, 37-365, 37-250, 370380 Xcalibur knives are made from Higher Grade of HSS for longer edge life compared to Regular Blades Specially designed with close tolerance for fast, smooth and effective planing We also make Planer knives for Grizzly , Delta , Rockwell , Dewalt , Portercable , Black & Decker Whitney, Oliver, SCMI, Porter, Powermatic, Northwood, Yates, Buss Master, Northfield, Crescent, Yates, Fay & Egan, Bridgewood, Newman, RBI, Parks, TTL, Sunhill, Northstate, Woodmaster and other Planing Machines.