Features:

*5Pcs/set Hex Shank Drill Bit Set Screw Countersunk Drilling Reaming Tools

* brand new and high quality

*Made of high speed steel 4241, the surface is titaniumized and durable

*Quick-change hex shank design for easier installation and unscrewing

*Can drill the screw hole and the counterbore with nut at the same time, and keep the two on the same axis

*Suitable for drilling machines with chucks or joints

*Great for workpieces with hardness below 25HRC, such as carbon steel, thin iron plate, insulation board, PVC board, wood board, etc.

Specifications:

*Material: Drill Bit: HSS 4241, Black Chamfe: Carbon Steel

*Color: As Pictures Show

*Size (Approx):

5#: 1.98mm 50 mm (length)

6#: 2.38mm 55mm (length)

8#: 2.78mm 60mm (length)

10#: 3.175mm 63mm (length)

12#: 3.56mm 65mm (length)

*Shank: 1/4 hex shank, 6.35mm

*Quantity: 5pcs / set

Package Contents:

1 Set of Drill Bits (5pcs)