Hollis Single Tank Adapter Bolt Kit Mask use full face masks because

use full face masks because they protect the eyes and nose from contaminants in the water

Includes compression resistant soft boots

we partnered with Atomic Aquatics and engineered over 20 improvements on everything from inner mechanisms and materials to exterior controls and aesthetics

Internal Components & Inlet QD Nipple made from Chrome Plated Brass

Mask has low-profile quick adjust buckles

Hollis Single Tank Adapter Bolt Kit Mask use full face masks becauseOverview 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