Package includes<br />18x Twist Drill Bits<br /><br />18PCS : <br />1.5mm 2mm 2.5mm 3mm 3.5mm 4mm 4.5mm 5mm 5.5mm<br />6mm 6.5mm 7mm 7.5mm 8mm 8.5mm 9mm 9.5mm 10mm<br /><br />Specification<br />Material: HSS 4241<br />Surface treatment: Titanium<br />Full length: 5-13cm<br /><br />Titanium twist drill straight shank for drilling holes in the angle iron， wood， plastic， aluminum and other materials