S.T. Dupont Premium Butane 30mL BLUE - DUPONT BUTANE BLUE If you find your lighter running low on fuel, these specially designed butane tanks are just the thing you are looking for! In order to use Butane properly - Remove valve cover on your S.T. Dupont lighter. Screw refill into the filling valve of the lighter (you may hear a hissing sound as you do, this is normal). Position lighter and canister upside down and add a small amount of pressure. Wait 5 seconds. Remove refill and wait a couple seconds. Screw refill back into filling valve and position upside down again for 5 seconds. Remove refill and replace valve cover. This Blue canister contains butane gas for the following lighters: Ligne 8, Ligne D, Mon Dupont, D Light, and Soubreny Lighters. To Use - Remove valve cover on your S.T. Dupont lighter. Screw refill into the filling valve of the lighter (you may hear a hissing sound as you do, this is normal). Position lighter and canister upside down and add a small amount of pressure. Wait 5 seconds. Remove refill and wait a couple seconds. Screw refill back into filling valve and position upside down again for 5 seconds. Remove refill and replace valve cover. 17 g / 30 mL Butane in One Container Enough Gas for 3-8 Refills per Container Made in France This canister contains blue butane gas for the following lighters: Ligne 8, Ligne D, Mon Dupont, D Light, Soubreny Note: Dupont BUTANE PRODUCTS CANNOT BE SHIPPED INTERNATIONALLY