When you get a small set of drill bits?￠ it is also common to lose or break one or two. And it might be a trouble when you need one of the missing drill. Well?￠ this flock of drill bits has more duplicates in one sizes?￠ no more worrying of the missing drill bits.Features:High-speed steel?￠ high quality.Titanium coated?￠ rust protection.High hardness?￠ performed well in cutting and drilling.Excellent workmanship?￠ stable performance and durable.Suitable for drilling hole of the thin plate?￠ wood or plastic that in low hardness.It includes 99 sizes in one drill bit set?￠ which meet your different needs perfectly.Twist Drill Model:16 * 1.5mm16 * 2mm15 * 2.5mm10 * 3mm10 * 3.2mm8 * 3.5mm8 * 4mm3 * 4.5mm3 * 5mm2 * 5.5mm2 * 6mm2 * 6.5mm2 * 8mm2 * 10mmSpecifications:Material: High-speed steelSurface Treatment: Titanium coatedPackage Weight: Approx. 448g / 15.82ozPackage Size: Approx. 14.5 * 10 * 2cm / 5.71 * 3.94 * 0.79inPackage List:99 * Twist DrillNote:This twist drill bits are not suitable for high hardness materials(such as stainless steel)."