Feature:

Five piece set includes bits for drilling pilot holes for screw sizes #5, #6,#8,#10,#12 , with wrench.

Special designed steel counter sleeve countersinks or counter bores pilot hole

Adjustable counter sleeve depth with Allen wrench

Standard hex shank is quick change compatible

Drill and countersink for wood screws without changing bits

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

Specification:

Color: Gold, Silver

Material: High-Speed Steel Drill 4241

Black chamfer drill body material: steel 45

Dimension:

5# 2.0mm(0.07874 inch)x 55mm(L)

6# 2.38mm (0.0937 inch) x 56mm(L)

8# 2.75mm (0.1082 inch) x 66mm(L)

10# 3.16mm (0.1244 inch) x 70mm(L)

12# 3.55mm (0.1397 inch) x 70mm(L)

Shank: 1/4 " hex shank

Package included:

1 Set(5pcs) HSS Drill Bits with wrench