This complete set of headspace gages provides a higher level of accuracy than a single go and no go gage set. Perfect for competition shooters, or for those trying to get the highest level of accuracy as possible out of their rifles. Each gage is clearly marked in .001" increments for very fine adjustments.A2 Tool Steel
Used to find exact headspace length by chambering each of the gages working up in order of length.
May be used for determining brass sizing or the reaming of a chamber.