The outer shell is made of ABS plastic with good sealing and a new noise reduction technology inside to reduce the vibration generated by the machine. It can be placed in any place for quiet operation. The product rotor is made of ceramics, the smooth surface and detachable design make it easy to clean and ensure longer service life. Suitable for aquarium water pump, air conditioner water pump, carving machine water pump, craft water pump, garden fountain and other relevant aquatic product accessories. Easy to use and replace, just remove the filter head and open the rotor lid bayonet lock , take out the defective rotor with axle and bearings and replace it with a spare rotor with new bearings.