Product name: Butane tank gas refill adapter Product size about :1.7*0.8cm/0.66*0.31in Product color: As shown in the figure Product material:Stainless steel product features: 1. Convert inflatable, more convenient to use 2. Can not be inflated in reverse, the cassette tank is inflated to the outdoor tank Small and easy to carry 3. It may not be commonly used, but it is very convenient when needed Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can contact us at any time. We will give you some suggestions, but for your reference only. Shipment includes: 1 /5pc Butane tank gas refill adapter