Size: Approximately 0.4 cm thick, 8.3 cm wide x 7.8 cm long. Weight: Approximately 88g. Center hole: Approximately 2.7 cm wide x 0.7 cm long. Shipping and replies are unavailable on weekends and holidays. Also, we may take long vacations during the summer and New Year holidays, etc., so we will announce them 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.