Needed a grease gun in a pinch and decided to go with this one a little over a month ago. Due to the price, I really didn't expect much. I was quite surprised. Two of the zerks on a 1956 walking tractor I purchased last year were stuck and my pistol grip gun would not open them. This gun blew them open with little effort. Use it to grease every thing now. It has surpassed all my expectations and I'm very pleased with my purchase.