Extremely poor quality I will update the performance report as soon as I have a chance to try them. Update: They cut 6061 aluminum really well. I'm updating my 1 star to 3 stars
βοΈ Uncoated High-Speed Counterbore by Alvord Polk
3 Review
π₯ Enhance Drilling Efficiency with Drill America DEWCSCBR6 High Speed Counterbore
3 Review
π© Fast Stainless Steel External Chamfer Deburring Solution
3 Review
π¨ HIP 2007 0062 High Speed Straight Counterbore: Streamline Your Machining Operations with Precision
3 Review