For years, the MK17 line has been SCUBAPRO's flagship when it comes to fully enclosed first stages with membrane. The latest version, the MK17 EVO 2, is next level in terms of performance, reliability, compact size and resistance to frost - it is one of the best SCUBAPRO sealed first stages with membrane ever. The MK17 EVO 2 is more compact and lighter than its predecessor the MK17 EVO and than the MK19 EVO. The first stage has a new brass housing, a dry chamber with two springs, making it even more reliable and compact. The two high-pressure ports - to a new design - are at a 15-degree angle, allowing optimal connection of the high-pressure hose. This eliminates the need for a transmitter adapter - the SCUBAPRO transmitter can now be connected directly to the first stage.