Kirby Morgan KMB Bandmask 28B Full Face Diving Mask W/ 455 Balanced Regulator

The 455 Is An All Stainless Steel Regulator With Superior Breathing Performance And The Added Advantage Of Compatibility With The SL 27, 17C, KM 37, KM 37SS, KM 57 Helmets As Well As The KMB 18 & 28 Band Masks. The Side Block Assembly of both the KMB 18 and 28 receives the umbilical over the shoulder in the B configuration. They both come standard with the Tri-Valve® exhaust system, and the new BandMask® BandKeepers®The Tri-Valve® Exhaust System has less breathing resistance than the older single valve exhaust. It retrofits to all previous Kirby Morgan BandMasks®. The BandMask® BandKeepers®, coupled with the redesigned hood, not only prevent any separation of the hood from the mask, but also make it impossible for the bands to separate from the mask.The communications connections can be either a male waterproof "plug in" type or bare wire posts.The KMB 28B BandMask® is very similar to the KMB 18. Many parts on the KMB 18B are interchangeable with the KMB 28B. The major difference b