Description: Materials: Copper Length: Approx. 17mm/ 0.67inch, Bottom Diameter: Approx. 8mm/ 0.3 inch Usage: Weigh unused full butane canister and write with felt-tip on the base. Place empty canister to be refilled in freezer for approx. half hour or overnight. Remove canister from freezer and place adapter onto the canister. Take your new full butane canister and insert into adapter. Push canister firmly down for 10-15 seconds at a time, checking each time the weight of the canister until it matches the original weight written on the base. Package Includes: 2 Pieces Gas Canister Refill Adapter
