100% brand new and high quality Introduction: Well,this valve is specially designed for pumping CO2,which is professional design and make your pumping easy to operate. Features: Can control it with open/close switch or Press Aluminum alloy,high intensity and durable. Easy to use,great valve for CO2 pumping. How to use: 1. Twist its top rotary knob clockwise. 2. Twist it into air pump tight. 3. Plug it into bicycle valve clockwise. 4. Rotate the rotary knob slightly anticlockwise. Specification: Material: Aluminum Alloy Type: CO2 Inflator Valve Color: As pictures shown Size: One Size Width: 41mm(1.61in) Quantity: 1 Pc(other accessories demo in the picture are not included!) Note:1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! You're welcome to visit my page http://www.facebook.com/etc365 http://www.bicyclebuysell.com/?user=NICHAN#!username=NICHAN COD Available Teluk Intan Area Only Please Contact: Call/Whatapps/SMS : 012 4682411 Mr.Chan