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 from your filter and replace it with the new CX900G knob. This process requires no special tools, making it suitable for non-professionals and allowing for quick installation. Durable Material Construction: Made from high-density plastic, the CX900G locking knobs are built for durability. The material enhances performance and provides reliable operation under regular use and environmental exposure. Compatibility Confirmation: Verify that your filter model is compatible with the CX900G locking knob before purchase. This ensures a proper fit and reduces the risk of returns due to incompatibility. Enhanced Product Performance: The CX900G locking knob replaces a damaged component and helps maintain the functionality of your filtration system. It is designed to meet or exceed original equipment specifications for consistent performance. 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) Note: Light reflection and different displays may cause slight variations in color appearance. Measurement may vary by +/- 1-3 cm.