Check the listing for details. Mares DUAL 15X Yoke - Scuba Diving Regulator - 416258-INTBK. Condition: New other (see details). Listed at 441.00 USD. Mares DUAL 15X Yoke Scuba Diving Regulator The Dual 15X scuba diving regulator is simple and lightweight in design making it ideal for a novice scuba diver. 15X First StageThe 15X first stage is compact in design and made with a sandblasted finish making it scratch resistant to maintain both form and function. This first stage features one Dynamic Flow Control (DFC) port and other pre-oriented ports making it suitable for octopus configuration.Dual Second StageThe Dual second stage is made from ultra-lightweight and ultra-strong technopolymer. This second stage features a Vortex Assisted Design (VAD) and a “curved” bypass which allows for unobstructed airflow and consistent natural breathing at any depth. Also, it features a large, user-friendly purge button for easy use, even while wearing thick gloves.