New Old Stock, part number 23-20222 Clamp Bracket bolt Spacer use on many Mercury engines including the Mark 30H and 55H plus the KG9, 35A, 55, 55A, 58A, 75 in addition to Merc 300, 350, 400, 450, 500, 600, 650, 700, 800 and more. The part number was supperceded to 23-59624. Will ship in a Small Flat Rate Box for $10 to USA addresses.