Double ThrusterJust strap it on and have fun! A black strap on vibrator with a large external vibrator and a small internal vibrator. The large external vibrator (17 cm long, 3 4. 3 cm) is slightly curved and can be used to penetrate the passive partner. The small internal vibrator (9. 3 cm long, 3. 8 4. 2 cm) is for penetrating the active partner. Both the vibrators have large glans, pronounced veins and 10 vibration modes that can be controlled with the remote