Hollis Scuba Diving Single Tank Adapter with Bolts & Nuts - V2 Version for Professional Divers | Perfect for Underwater Exploration & Dive Training

Exactly as described. I installed it on the back of my Hollis SMS 75 so I could quickly switch my rig between sidemount and backmount (depending on who I’m diving with). It helps keep the tank in place for backmount, and during sidemount it just adds some extra weight without being obtrusive. Installation was easy too.Delivery is quick and the product is very goodI'll buy again,Water is very delicious,.Thank you,For letting me eat good water,If you want to wish the development of the businessThis sta does exactly what I expected to do, hold my tank, and dip n dive had it for a GREAT price.