8 pack spa frog replacement cartridges， 6 bromine/ 2 mineral<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Replacement cartridges for the The SPA FROG® Floating System</li><li>Includes 2 Mineral Cartridges &amp; 6 Bromine Replacement Cartridges</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41759Z09T4L.jpg" noproxy>