small - maximum diameter of about 2.9 cm and a length of about 7.3 cm， base diameter of about 2.9 cm

Medium anal plug - maximum diameter of about 3.5 cm and a length of about 8.2 cm， base diameter of about 3.5 cm

large - The maximum diameter of about 3.9 cm， a length of about 9.5 cm， base diameter of about 4 cm