American Eagle Food Machinery® internal gears are manufactured to the highest industry standards! Enjoy years of effortless meat processing with a durable low maintenance single piece design. To get the best possible results, ensure that you insert the internal gears correctly on the metal shaft. All American Eagle Food Machinery® internal gears are manufactured from food grade aluminium material, making them easy to clean. This is a spare internal gear (includes only 1 quantity) that is only used for the AE-TS12 or AE-TS22 meat tenderizer kits and AE-TS12H meat tenderizer attachments with four black housing set screws and stainless steel housing. This can also be used for the AE-JS12 or AE-JS22 jerky slicer kits and AE-JS12H jerky slicer attachments. These internal gears are genuine OEM from the manufacturer and are not aftermarket parts. These internal gears WILL NOT fit older models AE-T12, AE-T12S or AE-T22S kits manufactured prior to 2010 with three set screws and aluminum housing. If you have an older model or that isn't the current model, please contact American Eagle Food Machinery® to help you locate the right internal gear.