Check the listing for details. 5Pcs Countersink Drill Bit Set Counter Hole Drill Bit Metal Woodworking CW. Condition: New. Listed at 28.75 USD. Highlight description:[Sturdy Material] The cutter head is made of YG8 alloy, cutter body 45# carbon steel, and surface sprayed, which has been quenched and has high hardness, wear resistance and durability.[3-Point Design] With five-edge chamfer design, it can automatically and quickly discharge the debris in the holes on both sides, prevent accumulation of debris and improving drilling efficiency.[Adjustable Cutting Height] The adjustable cutting height is 2.5-10.5mm. This countersink drill bit drills smooth holes quickly and accurately.[5 Sizes] The countersink drill bit includes 5 sizes, including 2.8×8mm, 3×8mm, 3.2×8mm, 3.5×8mm, 4×8mm. This multi-purpose tool is suitable for drilling holes in wood of many sizes, improve wo.