Introduction: <br />This set includes 5， 6， 7， 8， 9， 10， 11， 12， 13mm / 0.19"， 0.23"， 0.28"， 0.31"， 0.35"， 0.40"， 0.43"， 0.47"， 0.51". <br /><br />Cautions: <br />✮ 1cm = 0.39" = 10mm， 1" = 2.54cm = 25.4mm. <br />✮ 1%-3% length difference is allowed cause measured by hand. <br />✮ Due to the difference between different monitors， the picture may not reflect the actual color of the item. Thank you. <br /><br />Specification: <br />- Color: (as picture shown) Silver <br />- Use: Wood Drilling<br />- Material: Steel<br />- Shank size: 1/4" <br />- Length: 35mm/1.4" <br />- Length: 65mm/2.6" <br />- Inner Hex: 5mm-13mm/0.2"-0.5" <br /><br />Package Included:<br />1 x 9pcs/set Nut Driver Set Socket Adapter