Size: Thickness approximately 0.9cm, Outer diameter approximately 7.9cm, Inner diameter approximately 5.9cm, Weight approximately 37g Shipping and replies are not available on weekends and holidays. Also, we may take long vacations such as summer and New Year holidays, so we will inform you of this on our profile page each time. Please be sure to check for any issues. For items with included shipping, we may change the shipping method. Thank you for your understanding.