★ Xcalibur produce knives using the finest grades of steel which are triple temper hardened and ground to a fine close tolerance finish. ★ Xcalibur planer and jointer knife sets are made from high grade High Speed Steel. ★ Each set of knives is balanced to maintain the closest tolerances and reduce cutter-head vibrations which affect the surface finish and machine wear. ★ We also make Planer Blades for Whitney, Oliver, SCMI, Porter, Powermatic, Northwood, Yates, Buss Master, Northfield, Crescent, Yates, Fay & Egan, Bridgewood, Newman, RBI, Parks, TTL, Sunhill, Northstate, Woodmaster. ★ Size MM: 510(L) x 25(W) x 3(T)