Made of brass,Durable and , easy to install and use. This adaptor may be used on gas bottles and some others with left hand G5/8inch thread fitting. A safe and convenient propane bottle refill replacement. Type: UK type Size(.): length 136mm Instruction : Step 1: bottle must be empty if no 80 percent shut off connector fitted. : refueling without non-return connector you must close the bottle connector. Step 3: instructions and volumes are printed on the side of adaptor. Step 4: use of gloves highly recommended. colour: gold Material: brass Package Contents: 1 x Propane Bottle Refill Adapter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.