All cases should be case mouth deburred after trimming and neck turning. Tools are double-ended with standard 45-degree flutes that debur/chamfer the inside and outside mouth of the case. They will work on cases from .17 to .45 caliber. Precision ground flutes. Part Number: DBT-REG Get nice clean cuts on your case mouths with our super sharp case mouth deburring tool Handheld tool with optional power adaptor Years of use Precision ground flutes Made in the USA