Specification Brand : AUTOFU BulletPoint1 : Package Includes - The drill set includes 13pcs twist drill bits in 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm Diameter. All drill bits are packed in a storage box for easy usage and store. BulletPoint2 : Cutting Range - The drill bit is ideal for drilling thin metal plates (steel and aluminum) and body panels (metal, glass fiber and plastic), low carbon steel and wood. Fit for standard drill chucks and regular round collet chucks. Compatible with all electric drills and impact drills! BulletPoint3 : Quick Drilling - Extremely sharp drill bit with a centring tip allows for exact positioning of the hole. Twist drill bit kit will not "walk" or "wander", while with precise edges that produce tear-free holes. NOTE: twist drill bits Must be used and operated at 1500 RPM or greater for maximum efficiency. BulletPoint4 : Excellent Performance - Our twist drill bit are manufactured from titanium nitride coated high speed steel(HSS), with little molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, with up to 12 times when compared with an average HSS drill bit. BulletPoint5 : Perfect Drilling Tool - This drill bit kit is a versatile and practical set. Having varying sizes of drill bits allows you to tackle a wide range of projects and tasks whether you are a professional or a hobbyist, ideal for drilling into brick, stone and wood as well as working with thin metal. IncludedComponents : 13x drill bit, 1x small storage box ItemName : 13Pcs Drill Bits Mixed Multi Drill Bit Set, Twist Drill Bit Sets Titanium Coated 1.5/2/2.5/3/3.2/3.5/4/4.5/4.8/5/5.5/6/6.5mm High Speed Steel Drill Bits Tools with Storage Box ItemTypeKeyword : hex-shank-drill-bits Manufacturer : AUTOFU NumberOfItems : 1 PartNumber : twist drill bit-UKGST0432 Pattern : drill bits set ProductDescription : 13 PIECES PROFESSIONAL TWIST DRILL BITS SETS