brand new and high quality Features: An accessory for bicycle computer,installing on bicycle for valve,using magnetic design to record the wheel speed. Use with computer sensor,can work for bicycle computer. It can be stretchable,convenient to adjust distance between sensor. Excellent replacement for bicycle computer magnetic parts. Perfect match with your sensor. High intensity,strong magnetic and durable,waterproof. Notice: Only fits installing on US type of for valve. Specification: Material: ABS,Magnet Type: Stretchable Color: As pictures shown Size: One Size Standard Length: 35mm(1.38in) Quantity: 1 Pc(other accessories demo in the picture are not included!) Note:1.Please allow 0-1cm 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! Package includes(without retail package): 1 x Magnetic for Head