Simple but very effective canister for liquid aromas. With standard M40 gas mask-threading. The little air-intake hose goes all the way to the bottom of the canister which makes this product a real mini-bubbler bottle. Connect straight to your gas mask or your hose for a heavenly result. Made of black anodized aluminium. As with all breath play: NEVER play alone NEVER leave your partner unattended not even for a minute!