Asayu 7 Pcs Woodwork Countersink Drill Bit Set Sizes three/four/5/6/7/eight/10 mm and 5Pcs HSS Countersink Cone Drill Bit Set 5#,6#,eight#,10#,12# - DiZiWoods Store
7 Items Woodworking Countersink Drill Bit Set, three/four/5/6/7/eight/10 mm Countersink Cone Drill Bit Measurement:5#,6#,eight#,10#,12# Adjustable counter sleeve depth with wrench Drilling size could be adjusted for numerous size screws just by loosening and tightening the set