MiniTrencher SiBore SB216 Drill with Makita Engine - SiBore Drills are fast and lightweight sideway boring augers ideal for landscapers, sprinkler system installers, plumbers, electrical contractors, trenchers, and tool rental companies. The SiBore Drill is compact enough to be thrown in the trunk on the way to the job site. It is powered with a Makita 40V MAX XGT battery powered motor. Holes ranging from 2” and 4” in diameter can be drilled under a standard sidewalk in less than five minutes.