The Wendy Williams Anal Trainer Kit from Doc Johnson is perfect for any level of anal play, from beginning to expert. Who better to learn from than adult star Wendy Williams? Training can be fun! Small: Total length 4.5 inches Usable length 3.9 inches Diameter .9 inches Medium: Total length 5.5 inches Usable length 5 inches Diameter 1.6 inches Large: Total length 5.5 inches Usable length 5 inches Diameter 2.5 inches