The new Hydromax X20 is the first addition to the range. The Hydromax X20 has the same great features as the Hydromax X30 and X40 but is a little smaller, designed for guys whose penis in no longer than 5.5 inches The Hydromax X20 is the ultimate in hydro technology for penis development and health. Does all the Bathmate Hercules does and more. Hydromax X20 generates 35 percent more suction force than the Bathmate thanks to its unique, newly designed Bellows Pump system, providing you with better, faster gains.