Dewalt NA187629 Nailer Driver SA is used to drive fasteners accurately and support reliable nailer performance. This replacement driver assembly works by transferring the tool’s driving force to the nail, allowing it to be driven into the material with each trigger activation. A properly functioning driver supports consistent fastening, smooth operation, and reduced misfires during us... https://www.wholetoolbox.com/dewalt-na187629-nailer-driver-sa/NA187629.html