The Ultimate 'Magunm' Potent Developer

Insert penis into vacuum chamber with the base of penis pressed against the surgical latex sleeve to ensure positive sealing.   Safety Vacuum Gauge: Exercise penis gradually within the safety vacuum of 17.5 cm Hg to 38 cm Hg reading range. Piston: air will escape from piston port once the press handle is activated.  Press handle repeatedly to extract air from vacuum chamber.