99Pc Drills Set HSS Titanium Coated Wood Plastic Metal Metric 1.5-10mm With CaseFeatures: High speed steel twist drill bit set for wood, plastic, aluminum, copper and steel. Perfect for DIY, home use and general building engineering using. Twist drills will make drilling easier and more effortless. Fast and clean drilling with maximum surface quality. Provide safe drilling start without pre punching. Specifications: Color: Black Material: High Speed Steel Surface: Titanium Coated Hardness: HRC 60 62 Containing Sizes: 1. 5mm, 2mm,