Hollis Single Tank Adapter Bolt Kit Mask because there is no frame

because there is no frame

Mask has low-profile quick adjust buckles

It's a convenient diving system that's designed specifically for rapid response to an emergency

Internal Components & Inlet QD Nipple made from Chrome Plated Brass

enhancing your creative options without complicating your rig

Hollis Single Tank Adapter Bolt Kit Mask because there is no frameOverview Don't always want to dive doubles, but your gear is set up for doubles. The Hollis Single Tank Adapter gives you the versatility of single cylinder use when you have a dual cylinder set up. All you need is the adapter and this set of stainless steel bolts with butterfly nuts which make installation and removal a breeze. Small parts can get misplaced or lost, so having a spare set of hardware can get you out of a bind in an emergency. Bolt kit