During the manufacturing process, burrs that can cause erratic ignition are often left inside the case at the flash hole The universal flashhold deburring tool is for all calibers from .22 thru .338 cal. using standard (.080) flash holes. This tool controls the cutting depth with a built-in stop that locates on the inside web of the case. A unique feature of this tool is the cross drilled hole for chip relief. Uses standard pilot stops for 3/16" mandrels See the small flash hole deburring tool (#06110) for .17 & .20 cal. and cases with small (.060") flash holes.