Please read carefully before bidding.New in box old stock with instructionsThis part came just as you see it but one bolt in picture is missing.Instructions read Tac-On Double Reduction Adapter.Research shows to be used for Raider Worm gear Speed Reducer.That's all I know and please make sure this is the part you need before buying and that you agree to this description.The seal is cockeyed.One side is higher than the other.Bolts don't fit holes and may have just been put in box by mistake.