Enrich your dildo harness arsenal with a new toy that you will definitely enjoy. This Raging Hard Ons 8 Inch Dong is a great accessory from Doc Johnson that is designed exclusively for Vac-U-Lock system harnesses. Made out of firm rubber, this dong is shaped and colored like a real cock. On top of that, the thick-veined texture will deliver increased stimulation to the receiver during the play. So use it with or without the harness.