Optimal Rock making sure to firmly press the cylinder against your body to ensure a good seal turn the pump to the on position after a firm erection is achieved reach down and turn the ring ejector sleeve and twist the ring ejector will twist the ring off the cylinder and break the vacuum seal in one swift motion shown here the revived premium manual pump is designed for use with one hand shown here the vtu one manual pump is designed for use with two hands after the erection is achieved we move the body shield before intercourse Optimal Rock after