Ergonomically designed to target the prostate, the njoy Pfun Plug delivers firm, controlled massage. Whether manually controlled, or activated with the userft.s own muscles in ft.hands-offft. mode, the Pfun Plug prods the P-spot with precision. Insertable Length: 3.5 inches (89mm) Tip Diameter: 1.25 inches (32mm) Weight: 11oz. (310g) Crafted in high quality stainless steel.