With a total cylinder length of 23 cm (9) and an inner diameter of 5.5 cm (2.17), this high-quality pump gives you ample possibilities to grow in both directions! The total length of the hose is 25 cm (10) and the insertion sleeve is made of smooth Silicone. Surprise yourself on how big you can get! This variant comes with a plastic pistol grip pump, a cylinder with gauge and a quick release valve for your comfort. There are two versions available: transparent and black. WARNING: Please read product manual before using any type of vacuum pump orconstriction ring. Stop using the devices immediately if you experience any pain or discomfort.