Vac-U-Lock Ultra Harness 2 and Plug with 8 inches Cock from Doc Johnson Novelties. 1 complete set for couples for the world's only Modular Sex System. Vac-U-Lock Modular System Ultra Harness 2 & Plug with 8 inches Dong Set 2 black Vinyl harness with red Vac-U-Lock plug that you can use with the 8...