Widely Applicable: C900G filter knob Kit compatible with for star clear plus filters models C751, C7512, C900, C9002(S), C1200, C12002(S) C1502, C17502(S), and C2002 Filters. Package Includes Compatible Pool Filter Parts: C900G (Locking Knob 1), C900D (Guide Cone 1), C900J (E-Ring 1), C900W (Washer 2), C900H (O-Ring 1), EC1322A (Directional Vent Valve w/O-Ring 1) Easy Installation: The installation is fast and simple, Remove the part from the filter and install the part. (Please confirm whether your model is suitable before buying). Craftsmanship: Made of high-quality materials, to aging, resistance, and High-temperature properties; Adopt an electro-galvanizing process to increase rust resistance, Which improves the service life and performance of the products and can provide you with a better eperience. : The star top of the pool filter got stripped over time, and the old cone was gone. The one helps guide the top onto the threaded rod that holds everything together. Fied leaks from the top of the filter housing and makes cleaning the pool filter easier. Type:C900G Locking Knob & C900DA Pool Filter Knob Kit Tips:The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please dont mind. And take a consideration before place the order if you have request for color or appearance. Colour:Black Material:Plastic Package Contents: 1 * C900DA Pool Filter Knob Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.