Features: * new and high quality. *Made of high quality material, durable and practical to use. *Airsoft Propane filling adapter. *Store silicon oil and lube your GBB with refill propane. *Non-leaking design: The silicone oil will mix up with the propane while not use. The silicone oil will not leak out from stem. *Mixed propane with silicone oil: Only when you press the stem, the silicon oil will go out with propane and go inside to your GBB magazine. *Use with any standard camping-style Propane gas tank. *Easy to use.Durable in use. *Knurled surface enables a firm grip when tighten/loosening from tank. Specifications: *Material: Metal *Color: as shown in picture Package Contents: 1*Airsoft Propane Adapter Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.