This is a set of Three (3) Tools: Engine Alignment Bar Tool Engine Alignment Bar Tool for MerCruiser Sterndrives including: Pre-Alpha "R", Alpha One "MR", Generation II, all Bravo models. This Tool is similar to MerCruiser P/N 91-805475A1 which used to be P/N 91-57797A3. As well as: Volvo SX P/N 3851083 and OMC Comba P/N 18-4442 Tool is made from high quality 1045 Steel. We have instructions on how to use the tool! Please send us a message and we will email it at your request. ***A higher quality tool than the competition*** Gimbal Bearing Installation Tool. This tool will work for OMC Cobras, Bravos, #1 Drives made from 1966 to Current makes, including the Pre Alpha(R), Alpha 1 ?MR? and Generation 2. We have directions on where to drill the hole in the alignment tool for correct lineup. We cannot pre-drill these as different manufacturers make the mounts in different places. Please send us a message, and we will email it at your request. ***Tool Comes with Black Oxide Coating For Years of Use*** And: Grease Seal Installation Tool. Our Tools Are: 100% Made in the United States. The Steel is purchased locally from an American Supplier in Chicago. The Aluminum is purchased locally from an American Supplier in Chicago. The CNC Machining is done in our own shop in Chicago. The Black Oxide Coating is done by a local company in Chicago. The Box you will receive it in is made in the United States.