$64.99 6pcs M3 M10 Deburr Countersink Bit HSS Drill Tap Combination Bit Set With 1/2 Square Drive To 1 
105 Degree Right Angle Drill Bit + 1/4 3/8 1/2 Hex Shank Socket Adapter Set 690188752886 | eBay
Jobber Drill Bit Set: heavy duty HSS-Co5, 1/16 to 1/2 inch dia., 29-pc | AutomationDirect
