Aircraft Part 205792 Gear This gear was purchased from an aviation surplus sale. I do not know the history of it. It is in good cosmetic condition. It actually looks to be new or overhauled, but I can not guarantee that. It has a "Release note and serviceable" tag attached with no aircraft type indicated. It measures about 4 9/16" OD. The arbor is about 5/16" ID. This is a metal gear about 1/8" thick with 54 teeth. I am not able to test it. It only comes with what is shown in the pictures. I have more than one of these and so the one you receive may not exactly match the pictures, but it will be in the same condition. S565-22 d