Birando Hand Held Confetti Air Compressed Cannon (17.5 Inch, Mixed Color Paper) Birando's Rainbow Confetti Cannons are hand held cannons which use compressed air to launch the pre-packed confetti and shower your party & guests. Easy to use, simply aim and twist Our compressed air confetti cannons use no explosives and emit no noxious gas. They are one time use only Caution - contents under pressure. Do not point towards anyone and this is not a toy and children should not use it Confetti Cannons are pressurized and cannot be shipped via Express Services; they are shipped via Ground Services only.