Hi Byronic,
Thank you for bringing this to our attention. We apologize for any inconvenience caused by the lack of information on the size of the star bolts included with our Aventon Brake Rotor. Thank you for your feedback and we appreciate your support. we will look intop the information needed for this and send you an email!
If you have any further questions or concerns, please don't hesitate to reach out to us. We are here to assist you in any way we can.
Aventon