Performance VX2 Enhancement Pump is a gentlemen's enhancement system that consists of a precision gauge, vacuum chamber, trigger pump, a removable airtight seal and a penis ring. Precision engineered vacuum chamber is clear for viewing progress measuring 2.55 inches wide, 11.2 inches in total length and accommodating 7.8 inches in penis length. Regulate the amount of pressure with the precision gauge, adjust the intensity with the two-finger, trigger pump control handle and disengage with the quick release valve. Bonus elastomer penis ring helps maintain erection and elongate each VX2 experience. Product Details: Material: ABS / TPE Pressure Release Valve. Product Instruction & User Safety Manual Advanced Pull Handle Design Generates More Vacuum Than Bulb Pumps 1 Ultrasoft Pump Sleeve & Stay Hard Cock Ring Included High Impact Polycarbonate. Clearly Etched Measurement Markings Measurements: Overall Length: 11 inchesInsertable Length: 8 inchesInner Width: 2.35 inchesOuter Width: 2.5Circumference: 7.85 inches