The mil-spec NBC (Nuclear, Biological, Chemical) M1 Canteen Cap is used for hydration with one and two quart canteens while wearing military gas masks. They include a valved drinking cap that permits use of the tubed drinking apparatus on military gas masks for hydration when masks are being worn. The NBC mask adapter has a pressure valve fitting gasket, cover, and a coupling with a self- sealing valve. The fit is for standard military one and two quart canteens or NATO standard 28mm military canteens.

Specifications and Features:
5ive Star Gear NBC M1 Canteen Cap
Made from BPA free heavy duty plastic
Designed to allow user to hydrate while wearing gas mask
Will fit standard 1qt. or 2qt. Canteens
Self-sealing valve will attach to drink hose of any standard NATO gas mask
Olive Drab