Max ll: 2.5″ (6.3 cm) diameter and 9.5″ (24 cm) length
For use with the Classic System Only. Durable glass cylinder designed specifically for the Osbon ErecAid Classic pump handle. Available in tree different diameters and lengths to accommodate a wider range of penis sizes. Standard Osbon ErecAid cylinder size (included in the system) is 2″ x 8.5″.