Features:

• 12" oversized cylinder with 2 ½" diameter and 3 interchangeable sleeves
• Sleeves of various dimension: small, medium and large designed to accommodate the length and girth
• Hi-tech pump creates a superb vacuum seal quickly and effortlessly.
• Comes with precise measurement system on cylinder and quick-release valve.

Rating : - Not recommended
Very poor quality. Not recommended. Since this item is not returnable, I just disposed it after purchasing without use. If somebody wants to buy penis pump I recommend you to go for a good quality with a pressure gauge where you can control the pressure. Else you will be wasting your money.