These are HSS Jointer Knives to suit the Powermatic 54A and Jet JJ-6 planer machines using the Planer Knives and a wide range of other planer blocks from 4 sided moulders to surface thicknessers. These are the industry standard 18% cobalt and are supplied in matched pairs in plastic packaging for transportation protection. Most other standard lengths of HSS Jointer knives can be found within our online shop. Xcalibur's highly automated production process guarantee 100% controlled precision blades that are dispatched to the customer at the best price-performance ratio with a short lead time.