A set of seven quick change hex shank through hole drilling timber. diameters 1.5mm to 6mm. specification:. Drill dimensions. 1.5mm x 16mm x 63mm. 2.0mm x 22mm x 72mm. 2.5mm x 25mm x 80mm. 3.0mm x 25mm x 82mm. 4.0mm x 35mm x 95mm. 5.0mm x 48mm x 107mm. 6.0mm x45mm x 112mm. related products::. Trend snappy quick chuck only tr_snap/qc.