Usage Tips:The Propane Adapter made completely of metal and has a silicone oil port to make lubricating the gas easier. The metal construction is more than plastic because as the gas flows through the adapter it chills the adapter making it more susceptible to breaking off or cracking. This adapter features a miniature silicon container attached to the side of the valve, so now you will now be to charge your magazines whilst lubricating them with silicon all at the same time. A specially designed chamber is designed to allow the silicon to mix with the propane gas when not in use, whilst at the same time preventing the silicon from leaking out of the valve Colour:As Shown Material:Metal Package Contents: 1 x Propane Refilling & Charging Adapter valve Only the above package content, other products are not included. Note: Light reflection 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.