bought this extender last week. Fits really great, and can be near tip of cock or 'rolled' back to near base, of course, for short cocks like mine. It says it will 'add 2 inches' to your cock. Room for your cock head to fit up deep inside. The extender is about same size as my whole cock is. !
Doubt anybody over 7 inches wants or needs an extender for their cock. Us 5 inch guys really need it!