Material: Made of High-speed steel(HSS) with titanium coated, titanium surface that will help them last longer holes.
99pcs Twist Drill Bits Set Contain : 16×1.5mm, 16x2mm , 15×2.5mm , 10x3mm , 10×3.2mm, 8×3.5mm, 8x4mm, 3×4.5mm, 3x5mm, 2x 5.5mm, 2x6mm, 2×6.5mm, 2x8mm, 2x10mm.
Suitable for Drilling Holes: Angle iron, wood, plastic, aluminum alloy. (Not For Use On Concrete / Masonry / Stainless Steel). Perfect match for workshop or service vehicles.
Good Quality: Extremely high hardness, in the drilling work has excellent processing performance, All grinding sharp ligament sticky milling work hole smooth no burr.
Wide Used: Great ideal for DIY, home and general building, engineering using.