7pcs Carpentry Countersink Drill Bit Set 5-12# Woodworking Tools

Features:
7pcs Carpentry Countersink Drill Bit Set 5-12# Woodworking Tools
7 Pcs set includes bits for drilling pilot holes for screw sizes 5#,6#,7# ,8#.9#,10# and 12#
Twist screws on the same axis, and screw nut below the board plane, drill collars can adjust up and down!
Apply to with a clamp or joint drilling machine, suitable for drilling in the hard wood and wood floor, machine screw for wood screw.

Package included:
7x Countersink Drill Bits
1x Hex Shank