Neck Tension Gage (NTG) Kit
This kit includes all five calibers available. Each Neck Tension Gage (NTG) Inspection Tool consists of four stepped diameters that increase in size until reaching the handle. Each diameter is etched on the metal tool.
Directions: Simply insert the stepped end of the tool into the neck of your sized case, sliding it in until one of the diameters achieves a slip fit in the case neck. Use the resulting value to fine-tune your case preparation.
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