5pcs Hss Countersink Drill Cone Bit Set Quick Change Hex Shank Woodworking Screw Reamer

Special designed steel counter sleeve countersinks or counter bores pilot hole.

Adjustable counter sleeve depth with Allen wrench.

Drilling length can be adjusted for various length screws simply by loosening and tightening the screw.

Pre-drill and countersink to drive screws flush with the material surface or deep hole counter boring for driving screw heads below the surface.

Ultra-sharp cutting flute clears chips efficiently and leaves a clean, smooth hole.

Adjustable drill bit length for desired screwed depth, and features a flattened shank for a no-slip countersink connection.

Suitable for less than 25HRC hardness workpieces, such as carbon steel, sheet iron, insulation board, PVC board, wood, etc.

Package Included:
1x set (5pcs) Drill Bits
1x Hex Wrench