Part Number CX900G: This locking knob replacement kit is designed for Hayward Star Clear Plus Cartridge Filter Models including C900, C9002, C1200, C12002, C12002S, and C751, ensuring proper fit and compatibility. Easy Installation Process: Remove the damaged knob and replace it with the new CX900G knob. No special tools are required, allowing for quick and simple installation by non-professionals. Durable Material Construction: Made from high-density plastic, the CX900G locking knobs are built to withstand frequent use and environmental exposure, offering long-lasting performance. Compatibility Confirmation: Verify your filter model before purchase to ensure compatibility with the CX900G locking knob and avoid return issues. Enhanced Product Performance: The CX900G locking knob helps restore and maintain the functionality of your filtration system. Designed to meet or exceed original equipment specifications, it provides reliable and efficient operation. Material: Plastic Color: As shown Package Contents: 1 x Locking Knob (CX900G) 1 x Guide Cone (CX900D) 1 x E-Ring (CX900J) 2 x Washer (CX900W) 1 x O-Ring (CX900H) 1 x Directional Vent Valve with O-Ring (ECX1322A) The package includes only the items listed above. Note: Lighting and display differences may cause slight color variations between the product image and the actual item. Measurement may vary by +/- 1-3 cm.