If you are looking for a set of twist drill bit that both high quality and durable, this one is it.<br /><br />Features:<br />Straight round shank.<br />Drill hole quickly and nicely.<br />High-speed steel, high quality with good durability.<br />Including 13pcs drills in different sizes(4mm/4.5mm/5.0mm/5.5mm/6.0mm/6.5mm/7.0mm/7.5mm/8.0mm/8.5mm/9.0mm/9.5mm/10mm), which meet your different needs perfectly.<br />Suitable for wood board drilling or other low hardness sheet.<br /><br />Note:<br />The drills can not be used to process materials with high hardness, such as stainless steel, etc.<br /><br />Specifications:<br />Material: 4241 High Speed Steel<br />Drill Type: 4mm/4.5mm/5.0mm/5.5mm/6.0mm/6.5mm/7.0mm/7.5mm/8.0mm/8.5mm/9.0mm/9.5mm/10mm<br />Package Size: 16 * 11 * 1cm / 6.29 * 4.33 * 0.39in<br />Package Weight: 302g / 10.68oz<br /><br />Package List:<br />13 * Drills<br><img src="//agdetail.image-gmkt.com/m430/402/091/827091402/img/agdetail.image-gmkt.com/402/091/827091402/img/img.tomtop.com/product/xy/2000/2000/p/gu1/E/1/E2011/E2011-1-016a-bDtY.jpg" /><br>$$<img src="//agdetail.image-gmkt.com/m430/402/091/827091402/img/agdetail.image-gmkt.com/402/091/827091402/img/img.tomtop.com/product/xy/2000/2000/p/gu1/E/1/E2011/E2011-1-016a-x0mo.jpg" /><br>$$<img src="//agdetail.image-gmkt.com/m430/402/091/827091402/img/agdetail.image-gmkt.com/402/091/827091402/img/img.tomtop.com/product/xy/2000/2000/p/gu1/E/1/E2011/E2011-1-016a-W5yc.jpg" /><br>$$<img src="//agdetail.image-gmkt.com/m430/402/091/827091402/img/agdetail.image-gmkt.com/402/091/827091402/img/img.tomtop.com/product/xy/2000/2000/p/gu1/E/1/E2011/E2011-1-016a-OQ2l.jpg" /><br>$$<img src="//agdetail.image-gmkt.com/m430/402/091/827091402/img/agdetail.image-gmkt.com/402/091/827091402/img/img.tomtop.com/product/xy/2000/2000/p/gu1/E/1/E2011/E2011-1-016a-m8Jd.jpg" /><br>$$<img src="//agdetail.image-gmkt.com/m430/402/091/827091402/img/agdetail.image-gmkt.com/402/091/827091402/img/img.tomtop.com/product/xy/2000/2000/p/gu1/E/1/E2011/E2011-1-016a-a7R1.jpg" /><br>$$<img src="//agdetail.image-gmkt.com/m430/402/091/827091402/img/agdetail.image-gmkt.com/402/091/827091402/img/img.tomtop.com/product/xy/2000/2000/p/gu1/E/1/E2011/E2011-1-016a-x1kE.jpg" /><br>