It is an authentic item that is supplied directly from the original equipment manufacturer for use with Powermatic jointers. This is a special screw that is designed to secure the knife Gib. It provides an identical replacement for a missing or a faulty part that was installed on a new unit, please make sure to refer to the appropriate diagrams of your model for the correct location and application of this hardware. Keep in mind this high-quality screw is made of durable metal and is sold individually. For Use With: Jet 60B (1610077K) 8" 3HP 3PH 460V Magnetic Switch Jointer 60C (1610084K) ...