Check the listing for details. Helical Cutterhead for Powermatic 50, 6" jointer, PM50. Condition: New. Listed at 279.00 USD. Note that this is a cutterhead with a 5/8" shaft. Please double check the dimension of the shaft prior to placing an order. The Powermatic 50, PM50, is one of the most desirablevintage 6" jointers out there. This is a helical cutter head, manufacturedby WGM Tool Works, to replace the stock traditional steel cutters. Each headfeatures 4 rows of cutters for a total of ~28 (already installed on thecutterhead). Each cutter, or carbide insert, is solid carbide and willout last your steel knives by a good margin. Each insert also has four cuttingsides so just rotate the one side that gets dull and your are ready to planeagain. For more information, visit our website at: https://www.wgm-toolworks.com. If you are unable to find your cutterhead on Ebay, check out our website and/or email us and we may have it in stock. The advantages a helical cutterhead offers include: Chip outs largely eliminatedExtremely noise reductionLong lasting cutter lifeNo sharpeningEasy replacement of cutters and no alignment required The last picture is an example of a jointed lumber surface through our cutterhead. The package include: a spiral cutterhead with carbide cutter inserts installed3 additional spare carbide inserts3 additional spare Torx screwsa wrench for installing inserts