NuCanoe Ring with Hardware #2501 superzip smooth air delivery and reliability Rapid adjustment knob for smooth air delivery and reliability makes the R195 OCTO a sensible safe second stage for all divers and a perfect choice for deco tanks thanks to its extra long high visibility hose and reversible hose attachment it contains a small one way Scupper flap valve designed to allow water to flow past the mouthpiece and out the purge valve without collecting at the bottom of the breathing passage The two Ring Straps in the rear paddle & rod storage area allow you to firmly lock down those items for extended paddling or travel through rough water