Specifications: Fine and professional workmanship makes it very sturdy and durable. Easy and convenient installation steps, it won't waste your time and effort.Sophisticated and professional workmanship allows it to be very sturdy and durable. It is simple and easy to install steps, won't waste your time and energy.What makes it not waste your time and effort is the simple and convenient installation steps. The reason why it is very sturdy and durable is that it has the exquisite and professional workmanship.Features: The top cover is CNC machined and electroplated, very beautiful, not only can perfectly match your bike, but also can play a decorative role, very practical.A CNC machined top cover with electroplated color is very beautiful, not only can perfectly match your bike, but also can play a decorative role, very practical.It is suitable for bicycle, refit, repair, mountain bike, road bike and so on.Diameter: 3.15cm/1.24" (Approx.)notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.Package Includes: 1 x Headset Cover 1 x Screw