The Stroker Keeper V2 allows you to physically attach the stroker to your penis so that it is not only impossible for the stroker to pop off, but it also allows you to use VacuGlide hands-free. Just attach the Stroker Keeper to the bottom of your preferred stroking tube and then insert your penis. Place your balls through the other hole on the Stroker Keeper and then enjoy! You should still make sure to adjust the stroking length to your personal preference with the included tool prior to using the Stroker Keeper, but using it to attach VacuGlide’s stroker to your body ensures a hassle free, seamless, and extra pleasurable masturbation session.