
The essence of effective pumping is having a good shaft for creating the vacuum inside. COLT cylinder is a handy penis pump accessory that can be used for enhancing or repairing your penis pump system. Having 9 3/4" in length, this cylinder is made out of hard see-thru plastic and has an interlocking quick disconnect valve that can be used with most pump systems. You can choose from three diameters: 2 3/4", 2 1/4" and 3 1/4"

Comments
Nice
Need to get this
nice
i have been using pumps for years.from my own exerience,these do not make your penis larger than your natual size.this is great exercize to keep your penis in shape.this cyiinder is the perfect length.
Top Quality!
Initially I was confused becasue the top cylinder fitting has a built in check valve, which will automatically close, so you can remove the pump with tube, without releasing the vacuum from the Cylinder. This is a great feature, but can be confusing at first since there is no mention of this feature.
This is a high quality product. The only issue for the biginner is... since the diamter is large, 2.75", you will need to, initially, reduce the diameter, using one of the silicone reduction rings, which attach to the end of the cylinder.
Otherwise... enjoy!