*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
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)
