Step drill with hardened cutting edges for furniture construction bolts.
Supplied with HSS slow spiral drill.
Dimensions:
Shank Diameter=1/4 inch hex
Board thickness=15mm min.
Bolt size=7mm
Stepped drill diameters:
D=5mm
D2=7mm
D3=10mm
Shank Diameter: 1/4 hex
Diameter Metric: 7