Optimal Fit for Multiple Models: This threaded cap is specifically designed to fit for Rainbow automatic chlorine/bromine pool and spa feeders, including models 300, 302, 300-29X, 320, and 322. a perfect match for your pool maintenance needs with this versatile replacement. Designed for Durability and Ease of Use: Crafted from high-quality materials, the white threaded cap offers and reliable performance. Its design focuses on easy installation and a secure fit, preventing leaks and ensuring efficient operation of your pool or spa's chemical feeder. Aesthetic and Functional: Available in a clean, white color, this replacement cap not only matches your existing equipment but also maintains the aesthetic integrity of your pool or spa setup. It's designed to blend seamlessly with your system while providing essential functionality. Colour:White Material:plastic Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * Cap 1 * Sealing ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.