Feature: 1. COMPATIBILITY: The pool filter knob kit is suitable for Star Clear Plus for CX900DA cartridge filters, ensuring a perfect fit and effectively solving the need for cartridge filter knob replacement. 2. PREMIUM MATERIAL: Made of premium ABS material, which is not easy to be damaged and has good durability and abrasion resistance to ensure long term service life. 3. EASY INSTALLATION: The installation is very simple and it can directly replace the old or damaged knobs. No need for complicated ways, which can meet the user's replacement needs, convenient and quick. 4. HIGH RELIABILITY: Made with exquisite craftsmanship to ensure reliable and stable quality, which can be used with confidence and effectively enhance the user's experience. 5. WIDELY USED: This filter knob replacement kit can also be used in swimming pools, SPA halls and other places, a wide range of applications, providing solutions for different users. Specification: Item Type: Pool Filter Knob Kit Material: ABS Weight: Approx. 75g / 2.6oz Applicable Model: For Star Clear Plus, for CX900DA Cartridge Filter. Package List: 2 Sets x Pool Filter Knob Kit (Total 10 Parts)