... and good quality,very competitive price,soon delivery LOW VELOCITY Gun Nail TOOL:1):SDT-A301 tool(similar with DX350), fit DN ... DN,.300 head pins and .22 single loads,HIGH VELOCITY Gun Nail TOOL:1): 660 tool fit 6mm or 1/4mm head ... (5.6x16,low velocity)single,brown,green,yellow,red colour Gun Nail