This Handy Adapter allows you to attach a Mini Tech Gauge by XS Scuba (SKU's: XSSMTG and XSSMTGM) to the end of a High Pressure Hose. 90° Gauge Adapter is a great item for a Low Cost, Low Profile Pressure Gauge for Stage Bottles or Redundant Air Supply set ups. Adapter allows Right Angle (90°) connection with the HP Hose. 90° Adapter is made from Chrome Plated Brass for Durability and Long Life. 90° Adapter comes equipped with an Air-Spool with Viton O-rings so it's Nitrox Compatible.