Bp-lucite Cylinder-2.25in

The most popular of all Standard Series with classic upward flared neck. Built in cock ring, growth indicator and sophisticated automatic air valve. Please note this is not a kit. Pump sold separately. Handcrafted and hand polished in U.S.A. Usage Note: None of the Boston Pump penis pump cylinders are made to hold suction. The penis pumps create negative pressure (vacuum) in the cylinder only! After reaching the optimum level of the vacuum in the suction cylinder, you must disconnect the pump from the cylinder or else you will lose the vacuum. Boston Pump is a U.S. registered trademark and almost 99% of all our products are made in the U.S. Pros: Capable of high suction, Suitable for Hydro-penis pumping, Built-in cock-ring. Cons: Requires full shaving for best suction. Made in the USA