Carbonator Motor Pump Clamp (quantity/2) You need to use this extremely strong screw clamp to mount your brass water pump or stainless recirc pump onto the motor of your carbonator or recirc cold carbonator. Unlike your normal hardware store type screwclamp, this screwclamp is designed to withstand enormous constant impact without cracking or breaking. If installed properly the pump attached, will never seperate from the motor. You will not be able to substitute this clamp for any other. It is very important to snap it into the motor & pump rim properly. Rear visibility is not available when installing it. To avoid seperation or pump or motor seizing, make sure that the clamp is not installed crooked. Quantity of 2.