MNB0003 - NNR BUR NO.12 (CONE BUR)

NNR BUR have tapered sides that come to a point at their tip. They’re used for enlarging and deburring holes and for repositioningflush settings before refining the seat. Also available with round or flat ends.They cut precisely when new, but don’t retain their sharpness as long as other steel alloys. They’re used at low speeds.