5Pcs Countersink Drill Bit Set Counter Hole Drill Bit Metal Woodworking GrBqw
5×Countersink Drill Bit. [Adjustable Cutting Height] The adjustable cutting height is 2.5-10.5mm. [5 Sizes] The countersink drill bit includes 5 sizes, including 2.8×8mm, 3×8mm, 3.2×8mm, 3.5×8mm, 4×8mm.