7/16" Counterbore. 7/16" HSS Counterbore. 4 flute as shown. All are in good condition.. Condition:: Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitions :/ .