Description: Brand new and high quality The HW filter canister shaft is a magnetic shaft rotor specially designed for HW series filter canister. It can greatly reduce the noise generated by the rotor after a long period of wear. to avoid the flow of water is either too big or too small. Material: Plastic Size(LxDia.): Approx. 8x4.5cm/3.15x1.77inch, Suitable for HW304B/404/704. Package Includes: 1 Piece Rotor Note: Since the size above is measured by hand, the size of the actual item could be slightly different from the size above. Due to the lighting effects, monitor settings, etc. There could be some slight difference in the color tone of the pictures and the actual item.