Use electric drill power drive, wear- corundum grinding wheel to improve the bit rate. Simple and safe way to sharpen the drill bit Small and portable, practical tools The for novices and handymen Please note: the physical slightly color difference or difference, please do not mind, does not affect the use, thank you! Function: Quick and to sharpen the drill bit Note: After use, place in a dry and clean place. Do not use with harsh chemicals, it might reduce the . After use, place the drill sharpener in a place that is out of reach of children to prevent parts from harming children. Colour:orange+blue Material:ABS Package Contents: 2set x Drill Bit Sharpener Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.