STRENGTH & HARDNESS: High Speed Steel (HSS) along with bright finish ensures outstanding durability and sharpness, can reduce the friction. Size includes 1.0mm -10.0mm by 0.5mm***2 FLUTES FORM & ROUND SHANK: 2 flutes form helps clear chips and debris away from the bit, decreasing friction and heat for a faster, cooler drilling process.***PRECISE 135°SPLIT POINT: Prevent walking, clear chips and particles faster. Produced by precision fully ground which ensures chips move smoothly. It is your ideal choice for DIY projects and household maintenance and repair***WIDE APPLICATION: The drill bit set is more suitable for processing materials, such as alloy steel, plastics and woods, and also can be used for softer materials.***METAL INDEXED BOX: Metal indexed storage case is durabiliy and can protect the drill bit set well and from losing.***