For stronger erections that last longer, get the right hardware for the job! Slip a stretchy TPE rubber lug nut all the way to the base of your member and see the results for yourself in minutes. These hard-working rings use a simple desgin that works to increase blood supply where you need it most, giving you the torque to blow her mind during lovemaking! Enjoy them in the shower or bath as they're completely waterproof. 3 sizes depending on your mood Large: Width: 2.33" Length: 2.61" Depth: .75" Medium: Width: 2.17" Length: 2.46" Depth: .75" Small: Width: 1.91" Length: 2.17" Depth: .75"