This product locks onto the top of a spray can with a solid click and stays locked on until you remove it. The handle is comfortable even for a person with smaller hands. You can pull the trigger with all four fingers, which offers a secure grip and minimizes hand fatigue and pain. It is also designed so us lefties can use it as easily as righties. I spray lacquer several times a week from a spray can. It's a painful, tiring chore to press a spray can button for 5-10 minutes at a time with just my index finger. This gadget makes makes a tedious job as pleasant and easy as possible. CanGun1 is a MUCH better product compared with the Rust Oleum handles I have tried.

http://www.stuffstuff.com/