will active stop immediately to protect the machine and tools from damage.4.FeaturesUnique patent, two-time heading, double-dies and double-punches structure ①Bigger nail heads can be easily gotten②Nail heads are always very round and in the center.③Nail head without knock marks, consistent and good looking④Uniform thickness of the nail cap diameter.⑤Hollow design nail clamping dies, no small head, no ash blocking, no clip crumbs, no cracking, no frequent dies demolition.Nail cutter hol