Superior Drilling in: Wood, Plastic, Sheet Metal, Drywall, Copper, and AluminumMaterial: HSSSIZES: 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5.0, 5.5, 6, 6.5, 7, 7.5, 8, 9, 10mmRound Shank