Hayward CL200 In-Line Automatic Pool Chemical Feeder with Mounting Base<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Uses large or small， slow dissolving tablets</li><li>Dial control valve allows for easy feed rate adjustment</li><li>Easy-Lok threaded cover for safe and convenient access to add tablets</li><li>Unique finger-release catch provides extra security</li><li>Durable ABS body and high quality Viton seal for extended life</li></ul></div><img src="http://ecx.images-amazon.com/images/I/415cA4iBiML.jpg" noproxy>