Hollis OP Valve dumps are for replacing the over pressure valves on your Hollis Bladder.
Please note that if you have the Hollis SMS -system, you need to pick the Pull Dump valve for SMS from the dropdown menu.
You need a Frames Capable browser toview this content.
Technical Diving Wings | Bladders | Harnesses
Type: Wings + Bladders + Harnesses
Sign up to get the latest on sales, new releases and more …
© 2016 Mike's Dive Store