Material: aluminum alloyLength: 95 mm / 3.74 inchColour: BlackChuck clamping range: 0.2-3.4 mmTwist drill bit material: high speed steelDrill specifications:0.5 / 0.6 / 0.7 / 0.8 / 0.9 / 1.0 / 1.1 / 1.2 / 1.3 / 1.4 / 1.5 / 1.6 / 1.7 / 1.8 / 1.9 / 2.0 / 2.1 / 2.2 / 2.3 / 2.4 / 2.5 / 2.6 / 2.7 / 2.8 /2.9/3.0 mm