One strap on cock is good. but two. well. just imagine the possibilities! With the Vac-U-Lock Double Penetrator snap on accessory. you can pleasure your partner vaginally and anally! She'll love taking it in both entrances with two lifelike cocks. driven deep by your strong and secure thrusts. Part of the Vac-U-Lock modular system. simply snap on to your compatible harness for great strap on sex!