Feature:1. EFFECTIVE REPLACEMENT: This pool filter knob kit, including models CX900D, CX900A, CX900G, provides stronger durability and reliability, this replacement kit to provide a perfect fit and optimal performance.2. COMPATIBLE DESIGN: This locking knob provides a cost effective solution for replacing damaged or worn out components, ensuring continued functionality of the pool filter system.3. EASY INSTALLATION: With its simple design and precise fit, this tank locking knob is easy to install without the need for special tools or professional assistance. Pool owners can quickly replace the old knob and secure the tank lid for uninterrupted filtration.4. LONG LASTING CONSTRUCTION: Made from ABS, galvanized iron materials, this replacement locking knob offers durability and longevity, capable of withstanding the rigors of pool maintenance and outdoor conditions.5. SECURE TANK CLOSURE: The tank locking knob ensures a secure closure of the filter tank lid, preventing water leaks and maintaining the integrity of the filtration system for optimal performance.Specification:Item Type: Pool Filter Knob KitMaterial: ABS, Galvanized IronWeight: Approx. 465.00g / 16.4ozLocking Knob Size: Approx. 15.7x7.2cm / 6.2x2.8inLocking Knob Installation Port Inner Diameter: 14.7mm / 0.58inModels: CX900D, CX900A, CX900G.Package List:1 x CX900G Locking Knob Replacement8 x Accessories