Shank: 1/4 hex shankProduct model: 4pcs: 6#, 8#, 10#, 12#,With a wrench.5pcs: 5#, 6#, 8#, 10#, 12#,With a wrench.

The diameter of the gold drill bit corresponding to the chamfer:

5#: 2mm

6#:2.3mm8#: 2.8mm10#: 3mm12#: 3.5mmUsage:

The handle is a 1/4 hexagon handle, which can be used with electric drills and bench drills. After drilling a hole on the board and screwing into the board, the nut will sink into the plane of the board and will not protrude from the board.Package included:

5pc X countersink drill bit(5mm,6mm,8mm,10mm,12mm)1 X WrenchNote:

Manual measurement, please allow 1~2mm error.Due to the differences between different monitors and the beautification of the pictures, the pictures may not reflect the actual colors of the items.

Detail Pictures: