The new Hydromax X20 hydropump is the first addition to this size 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 and no thicker than 1.75 inches in width. 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% more suction force than the Bathmate thanks to its unique, newly designed Bellows Pump system, providing you with better, faster gains.