Lightzone Multi Refill 300ml Universal Butane FuelThis is the highest quality of butane for lighters. Please be cautious as the product is extremely flammable. Product users are advised to keep container in a well ventilated area to away from sources of ignition. Majority of the lighter on the market do not require an adaptor thus this product allow you to refill your lighter casing with ease. Picture illustration and instructions are provided on the bottle on how operate this product.Hold refill vertically press nozzle downwards firmly into the filter valve.A spray back usually occurs within 5 seconds indication that the lighters is full.