Adapter fitting quickly converts Nitrogen CGA 580 cylinder to compressed air CGA 346 for filling with compressed air. Cylinders are to be filled to 2000 psi on a 2216 psi filling system with Nitrogen or compressed air. Kit comes with conversion adapter and universal pouch with MOLLE capability for attachment at filling stations and to your NitroStrike units. MOLLE pouch compatible with 2.5 gal NitroStrike backpack (91-0014). Specifications Adapter: L 3.375 in. x Diameter 1.125 in. Weight: 7.58 oz Adapter with pouch: L 5 in. x W 2.375 x D 1.5 in. Weight: 9.45 oz