Perfect for collecting and measuring cum production! Tired of your subs spraying it all over? Want to force them to taste their own cum? ... This Thru-Hole Penis plug features highly polished ripples along its length that gently holds the plug in while the thru hole passes cum into the attached clear collection syringe! Great for those into DOM/SUB play!!! Machined to a .375" diameter x 2" in length of surgical grade alloy.