This is a brand new MARES airlock system for diving. Code: 417951 Brand : MARES Description : Assembly the BC on the tank has never been so easy. Airlock (Mares patent) allows you to fasten the BC to the air tank safely and easy without the slightest effort, safely and easy, simply pre-tension the tank strap slightly – and easy maneuver thanks to the new buckle – and connect the quick coupling BC hose for a seconds. The tank strap will be pulled tight by air pressure. A check valve and automatic mechanical clamping system ensure a stable and secure connection
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