The use of a penis pump creates a level of vacuum that will stretch and enlarge tissues. This high-expansion cylinder is cast of clear Lucite. It is flared outward at the bottom and has a slight inward roll at the opening, which acts as a built-in cockring and a comfortable seal without messy gaskets. This 9.5in long cylinder also features a state-of-the-art connector/air valve that allows the pump to be disconnected from the expansion cylinder while maintaining the exact pressure you choose. It also features a growth indicator to measure your progress. This 2.5 inch Boston Pump Works Lucite Cylinder fits basic Boston Pump Works Pump. Come grow with the Cadillac of pumps and pump accessories!

Weight 0.61 kg
Dimensions 9 cm

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