["brand new and high quality\nFeatures:\nThree-layer electroplating anti-rust, exquisite wear-resistant\nFine quenching-temper hardening technology.\nHarder and more wear-resistant, longer life.\nHigh-precision positioning tooth profile, efficient transmission.\nSuitable for road bikes and mountain bikes.\nPerfect to replace old freewheel, work perfectly for optimum performance and maximum safety and longevity.\nBike Flywheel only, other accessories demo in the picture is not included!\n\nSpecifications:\nMaterial: Steel Plating\n6/7 Speeds Diameter: app.11.4cm/4.49in, Thickness: app.3.3cm/1.30in\n8 Speeds Diameter: app.11.4cm/4.49in, Thickness: app.4cm/1.57in\n9/10 Speeds Diameter: app.13cm/5.12in, Thickness: app.4cm/1.57in\nSpeed: 6 Speed, Number of Teeth: 14-16-18-21-24-28T\nSpeed: 7 Spped, Number of Teeth: 14-28T\nSpeed: 8 Spped, Number of Teeth: 13-14-15-17-19-21-24-28T\nSpeed: 9 Spped, Number of Teeth: 13-14-15-17-19-21-24-28-32T\nSpeed: 10 Spped, Number of Teeth: 11-13-15-17-19-21-24-28-32-36T\nOptional Color: Brown, Silver\nOptional Speed: 6 Speed, 7 Speed, 8 Speed, 9 Speed, 10 Speed\nQuantity: 1 Pc\n\nNote:\nNo retail package.\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage Includes:\n1 x Bike Flywheel"]