Made of high quality ceramic, eco-friendly and durable material, wear-resistant and corrosion-resistant, certified by CE, ROHS, for long-term use. The outer shell is made of ABS plastic with good sealing and new technology interior noise attenuation to reduce vibrations generated by the machine. It can be placed on any place for quiet operation. The product rotor is made of ceramic, the smooth surface and the detachable design make it easy to cleaning, ensure longer durability. Suitable for Aquarium water pump, air conditioning water pump, carving machines water pump, crafts water pump, garden fountains, and other relevant aquatic product accessories.Easy to simply use and replace remove the filter head, open the bayonet lock of the rotor cover, take out the defective rotor with axle and bearings and replace it with a spare rotor with new bearings.