446 - vernier drive coupling

Gunmetal Simms couplings, lost wax castings which are unmachined. (central drive hole where indicated or flat requiring machining). Available 14 or 15 teeth (48mm diameter), 19 or 20 teeth (52mm diameter) or 23 or 24 teeth (68mm diameter) .

Please note that these are all supplied needing trimming of excess casting spur material.