We've re-engineered the throttle valve of our top of the line ATS Pro-X Rivet Guns to give you unmatched controllability when setting rivets of any type or size. With the improved variable power control at your fingertips, you'll be able to confidently perform the proper steps of riveting which are: aligning the rivet (tapping); enlarging it into the hole (swelling); and driving it to its finished size (bucking). This is no air hammer, it's a true rivet gun - and there is a difference. Includes both Beehive & Mechaid Retainer Springs, plus a FREE 4oz bottle of ATS Tool Oil. Non-slip Powder Coat Finish. 1/4" NPT Inlet. ATS-Pro Limited Lifetime Warranty.