1/4 Inch Hex Shank HSS Drill Bits #6# 8# 10# 12 Countersink Woodworking Tool with L Wrench Quick Change

1/4 Inch Hex Shank HSS Drill Bits #6# 8# 10# 12 Countersink Woodworking Tool with L Wrench Quick Change

4PCS - The drill bit set includes 4pcs HSS drill bits built for drilling 2.38mm, 2.78mm, 3.175mm and 3.56mm screw holes.

MAT PREMIUM MATERIAL - This drill bit set is made of high quality HSS 4241 material, which is very durable and can serve you for a long time.

MODIFY CONVENIENTLY - Adjustable depth of the sleeve with a hex wrench.The standard hex shank of 6.35mm is quick change compatible.

EASY TO USE - The drill length can be adjusted for screws of different lengths simply by loosening and tightening the set screw.

WIDE RANGE OF USE - Suitable for drilling workpieces with hardness below 25HRC, such as for carbon steel, sheet metal plates, insulation plates, PVC plates, wooden boards, etc.