Buck Algonquin manufactures a complete line of marine shaft couplers to match up to most  makes of marine transmissions.  They are precision machined to SAEJ755 specifications and made in both solid and split styles.  Custom machining is also available for couplers that are not normally produced.  All of Buck Algonquin couplers come with all mounting hardware.  If you have a question or can't find what you are looking for, please contact us for assistance.