ITEM NAME:2PCS Set Gas Convertor Shifter Refill Adapter Gas Stove Outdoor Camping Sto I4L7 2PCS Set Gas Convertor Shifter Refill Adapter Gas Stove Outdoor Camping Sto I4L7 This gas convertor helps shift liquefied gas from one Lindal valve (threaded) canister to another, and take with you only as much as you need. Easy installation to your appliances. Shift liquefied gas from one Lindal valve (threaded) canister to another. If combined with butane adapter (not included), it can shift gas from bottle type cartridge to screw gas cartridge. Color: silver gray On/off switch can adjust the gas refilling speed. Material: Aluminum alloy Item Size: 3.9 * 2.8cm / 1.5 * 1.1in Item Weight: 24g / 0.84oz Nozzle input and EN417 Lindal valve output. You can connect outdoor stove with screw type valve with cheaper nozzle bottle. Automatically turn off if the stove does not connect. Safe and easy to control. Package Contents: 1* Camping Stove Cylinders 1* Gas Cartridge Head.You can connect outdoor stove with screw type valve with cheaper nozzle bottle. Automatically turn off if the stove does not connect. 1 Camping Stove Cylinders. Shift liquefied gas from one Lindal valve (threaded) canister to another.