Most coil lines are capable of running at 50 feet per minute, but had to slow down to 25 ft/min. when applying welded duct liner fasteners. Gripnail introduced the industry's first 50 ft/min. two decades ago. Ever since we have been centered on continuously making industry leading improvements to the design. The PowerPinner 50 is capable of placing full range of weld pins up to 2" as close as 6" apart to metal as thick as 16 gauge without any extra modifications. The PP50 comes standard with a multitude of quality ensuring features that lead to unprecedented reliability.