This is the H2X Shaft Pin with SKU number X400130 and is one element that goes with the Blade Prop Kit. The H2X Shaft pin is a prop shaft pin and is a component of the wave propulsion.
Temperature Sensor Mount. Used in older style Master Spas to secure the flow sensor to the spa. A new mount should always be installed when you are replacing your spa sensor unit.
The Rubber Pump Mount is suitable for the elastic mounting of your replacement spa pump. These rubber mounts are simple and economical construction elements. They help to reduce the vibrations that are generated by your pump.