This high-performance gas canister is perfect for fueling campsite cooking appliances, such as stoves or lanterns. The gas canister incorporates a countersink safety release (CSR) feature, which activates in the event of a dangerous over pressure to release gas and prevent and explosion of the cartridge. Always read the label. Warning: Safety: Warning: Contains gas under pressure; may explode if heated. Keep locked up and out of the reach of children. Store in a well ventilated place. Keep away from heat/sparks/ open flame/ hot surfaces - no smoking. Protect from direct sunlight. Do not expose to temperatures exceeding 50 degrees celsius. Leaking gas fire: do not extinguish, unless leak can be stopped safely. Eliminate all ignition sources if safe to do so. Store in a dry cool place. Dispose of contents/ container in accordance with local laws and Regulations. Do not puncture of pierce or incinerate even after use. Warning: Do not refill. To be used with summit appliances, follow instructions for use supplied with the appliance. This cartridge is intended for use for use with all equipment of the following category: butane direct pressure according to en571 including appliances from the summit range this cartridge complies with EN417. Changing the cartridge to be carried out in a well ventilated area away from ignition sources. Close the appliance valve put the lever in the up position place the cartridge in the appliance ensure the cut-out in the collar of the cartridge is always aligned with allocator of the appliance put the lever in the down position locking in the cartridge in place. Make sure of a good connection with no leaks.