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. Durable Material Construction: Made from high-density plastic, the CX900G locking knobs are built for long-lasting performance. The material provides resistance to wear and environmental conditions. Compatibility Confirmation: Verify your filter model before purchase to ensure proper fit. This helps prevent returns due to mismatched parts. Enhanced Product Performance: The CX900G locking knob helps restore and maintain the functionality of your filtration system. Designed to meet original equipment specifications, it offers reliable 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) Note: Lighting and screen settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.