Countersink Drill bit Set,7PCS Wood Drill bits Hole Reamer bit Counter;

100% brand new and high quality
Seven piece set includes bits for drilling pilot holes for screw sizes 3mm, 4mm, 5mm, 6mm,7mm,8mm,10mm.
Special designed steel counter sleeve countersinks or counter bores pilot hole.
Adjustable counter sleeve depth with wrench.
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.
Chamfer is 5 flutes, In the process of using, can discharge the wood more rapid, sink hole disposable drilled smooth, screw cap perfect embedded in the surface of workpiece.

Specifications:
Color: As the pictures show
Material: HSS Drill 4241
Black chamfer drill body material: steel #45

Dimension Dia:
3mm x 61mm(L)
4mm x 75mm(L)
5mm x 85mm(L)
6mm x 92mm(L)
7mm x 100mm(L)
8mm x 109mm(L)
10mm x 120mm(L)
3-8mm of Chamfer: 15.8mm / 10mm of Chamfer: 18.8mm
Shank: 1/7 hex shank.
Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, Thank you.

Package includes:
7 x Woodworking chamfer
1 x Hex Shank