7Pcs Wood 5 Flute HSS Countersink Drill Bit Set 3 4 5 6 7 8 10mm Carpentry Tool
Enlarge or countersink holes, deburr edges; 15-degree chamfer. Drill and countersink for wood screws without changing bits. Single Flute edge chamfer 90 Degree. Black chamfer drill body material: steel #45.