Specification:HSS drill bit set for wood, plastic and aluminum, copper, steel, etc.Ideal for DIY, home and general building, engineering using.High speed steel, durable to use.Type: Drill Bit SetMaterial: High Speed SteelSurface: Titanium CoatedHead: HexQuantity: 1 Set (15Pcs)Features: Durable, Useful, Hex Shank, Convient to UseContaining Model: 3.0mm, 4.0mm, 5.0mmSize Details3.0mm: 5 Pcs, Length: 78mm/3.07" (Approx.)4.0mm: 5 Pcs, Length: 92mm/3.62" (Approx.)5.0mm: 5 Pcs, Length: 102mm/4.02" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:5 x 3.0mm HSS Drills5 x 4.0mm HSS Drills5 x 5.0mm HSS Drills