Titan Men Ass Master 4.5 inches Diameter Large The TitanMen collection from Doc Johnson presents Ass Master, the 4 diameter anal stimulator. Designed for ass play, this butt plug will fill you up. Curved and shaped just right, it is an excellent tool for the already experienced user. A dual density plug with an indestructible outer skin and cushy interior fill, it will leave you gasping for more. Made in USA, PVC, anti-bacterial, Sil-A-Gel, phthalate free. Suitable for female play.