7pcs HSS Carpentry Countersink Drill Bit Set Woodworking Tool

Material:

The bit is HSS 4241, black parts is 45# steel.

Size:

1/8″(3.18mm),9/64″(3.58mm),5/32″(3.97mm),11/64″(4.37mm),3/16″(4.76mm),13/64″(5.15mm),7/32″(5.56mm)

Type	The corresponding bit size(mm)	Chamfer size(mm)	Length (mm)
5#	1/8" (3.18mm)	9.5mm	77mm
6#	9/64" (3.58mm)	9.5mm	80mm
7#	5/32" (3.97mm)	9.5mm	84mm
8#	11/64" (4.37mm)	9.5mm	85mm
9#	3/16" (4.76mm)	9.5mm	88mm
10#	13/64" (5.15mm)	9.5mm	91mm
12#	7/32" (5.56mm)	9.5mm	95mm

 

These sets of tapered countersink drill bits with stop collars and no-slip shafts will be perfect for any job where you need recessed screw heads.

The fully adjustable tapered HSS steel drill bits are made to mimic the shape of the screw shaft to give your screws more holding power in the wood.

These bits are unique to other countersink sets because they include an adjustable stop collar therefore you can set the depth of the collar on the bit before each job and
then every time you drill a hole you will get perfectly consistent depths of each countersink drilled.