Efficient & Utility. Easily input and output. Convert 1L small canister to EN417 valve canister. 1L small tank input and EN417 valve output, efficient for your outdoor camping. Suitable for the 1lb propane small tank to connect the stove, light and other thing which need EN417 connector. Safety Use. No leaking safe design. When installation is correct and this adapter will automatically turn off if the stove does not connect. It is safe for you to use. Easy to Use. Use the adapter to connected to a 1 lb gas tank, screw on the gas cylinder. When finish the istallation, it could be act like the screw thread head of the flat gas tank. Please remember that the adapter must be screwed on the burner head before connecting the gas tank. Compact Size. With weight only 35g/ 1.23oz and size of 1.38*1.18"/ 35*30mm. Easy to carry. Convenient for your outdoor camping, barbecue party or outdoor picnic. Package includes 1 piece silver adapter only. High Quality Material. Made of aluminum alloy and copper mateiral, which will make the stove adapter anti-rust, corrosion resistant and long lasting.