100% brand new and high quality Features: High quality of materials, wear and corrosion resistance. High hardness and lightweight. The super sliding sprocket adopts the tooth shape configuration designed by computer, with contour shifting door, which can realize clear and smooth shift even under load Suitable for front shifting single disc gear system. Chain Guide only,other accessories demo in the picture is not included. Specification: Material: Aluminum Alloy Size: As the pictures shown Color: Black Optional Style: A,B Quantity: 1 Pc Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1 x Chain Guide