Motor Mount for 12mm tubes

There are many sources of aluminum clamps for 12mm CF tubing, but the hole spacing is usually too large for 16mm X 19mm motor mounting patterns, so you can't use them as the only method of motor mounting. Also, since the motor bodies are tapped aluminum, I feel more comfortable if all 4 motor screws are inserted - something you can't do if you simply screw the motor to the clamp. This adaptor fits between the motor and the tubing clamp. It is made for M3 capscrews, and all the screw heads are