Dormer Screw Extractor M8-M12 Product name: M9003 Bolt size: M8 - M12 Drill size for low or medium tensile screws millimeters: 4 mm Drill size for high tensile screws +75 tons/sq.inch millimeters: 4.2 mm Bolt size imperial: 5/16" - 7/16" Drill size for low or medium tensile screws inch: 5/32 Drill size for high tensile screws +75 tons/sq.inch inch: 11/64 Cutting diameter step millimeter: 3.18 mm Cutting diameter second cutting step - millimeters: 6.4 mm Clamping width - millimeter: 4.8 mm Clamping Length - millimeter: 7.5 mm Overall length - millimeter: 68.7 mm Net weight grams: 14 GBP 5.49 1