Material: RubberType: HeadsetColor: BlackSize: 12*5*5mmQuantity: 10pcsPackage includes:10pcs Bicycle Headset CapsNotice:1.1cm=10mm=0.39inch.2.Please allow 1-2mm error due to manual measurement and make sure you do not mind before ordering.3.Please understand that colors may exist chromatic aberration as the different placement of pictures.And if you have any question, please contact us, we will deal with your issue within 24 hours;