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. Easy Installation: Remove the damaged knob and replace it with the new CX900G knob. No special tools are required. Durable Construction: Made from high-density plastic for long-lasting performance. Compatibility Check: Verify your filter model matches the listed models before purchasing. Enhanced Functionality: Designed to meet or exceed original equipment specifications for 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: Color may vary slightly due to screen settings and lighting. Measurement tolerance is ±1–3 cm.