X Factor Penis Enlarger System and Vacuum Pump is possibly the ultimate enlarger on the market. It is the largest flask pump available, designed for those with over 22.8 centimeters when erect. For those who are ne seasoned vacuum pumpers or well-endowed, a smaller flask is recommended. This pump comes with three assorted rings for a secure seal, an easy-to-use pump and pressure trigger, and an ultra-suction hose. The powerful penis enlarger also includes a hard plastic shaft with ruler, a pump and pressure release trigger, an ultra-suction pressure hose, and three multi-colour, multi-sized sleeves. Its dimensions are 31 cm in length and 7 cm in diameter.