Penis pump with one-hand pump handle Transparent cylinder for easy viewing Pressure valve on the cylinder Easy & effective use Incl. replacement collar Instant power for the penis! Air Control penis pump by You2Toys for effective penis and potency training. Simply insert the penis through the tight, soft collar into the transparent-red clear cylinder and create effective vacuum with the one-hand pull pump. The penis becomes bigger, stronger and more powerful - the success can be seen on the inch measuring scale. The pressure valve is located directly on the cylinder and can be used to vary the vacuum for optimal adjustment. The hose and pump can also be removed from the cylinder while the vacuum remains. For even easier handling and more freedom of movement! Spare collar included. Cylinder 22 cm long, insertion depth 20 cm, inner Ø 6.5 cm. Tube with pump handle 40 cm long. ABS (cylinder), TPE (collar), P-PVC (hose)