Keep your drills and bits running at their absolute best with the westfalia electric spiral drill sharpener the device will automatically adjust to the correct bevel of whichever bit you are sharpening and collects any chips or shavings in a handy container for easy disposal by keeping your tools at their optimum you ensure that your tasks can always be completed quickly accurately and without costing you any extra effort or money for drill sizes from 3 13 mm in diameter automatic leve