Overview Reviews Product Description Horn - Gas Cannister only Refill gas cannister for Super Sonar Gas Air Horn. *NOTE: Compressed gases are classed as 'Dangerous Goods', please contact us for postage details if you would like to purchase Product Videos Custom Field Product Reviews Write a Review Write a Review × Horn Gas Cannister only Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *