#A full set of fractional, number and letter drills are available in a index case next to the drill. Use a drill from this case if one is available and usable. If a drill is unusable repair it or put it into the discarded drill tray. | #A full set of fractional, number and letter drills are available in a index case next to the drill. Use a drill from this case if one is available and usable. If a drill is unusable repair it or put it into the discarded drill tray. |