THIS GAS MASK BONG IS THE ULTIMATE SMOKING ACCESSORY! This Gas Mask Bong is the ultimate smoking accessory which you can clip onto each gas mask which has the standard M40-threading on the air-intake inlet. Because your face is completely sealed off from fresh air by the gas mask smoking tobacco with this bong will give you the ultimate hit! This bong can be used with and without water and has a small hole drilled into the backside of the plastic tube towards the gas mask opening. Cover the hole with your fingers while smoking and release towards the end of your inhalation cycle to get the final bang from the fresh air which enters the bong. A couple of metal mesh pipe screens is included which you can use to prevent tobacco from exiting the small aluminium tobacco holder. Note: this is novelty use accessory only gas mask itself is NOT included.