Technical data: Diameter [mm]: 9 Length [mm]: 125 EXTREME 2™ drills start drilling from contact with the material without the "wandering" effect. Holes are precise and perfectly even. Diameters 4.8 mm and above The innovative drill core has a conical shape and the risk of drill breakage is significantly reduced Non-slip shank with three grinding planes. Diameters 5.0 mm and above **