Echo EDR260 Engine Drill with Reverse Function 25.4CCThe EDR 260 Engine Drills put cordless convenience in a heavy duty drill with a choice of engine displacements. A 17. 1: 1 gear reduction converts engine power into tough drilling torque Features: 25. 4 cc professional grade, 2 stroke engine for outstanding performance Heavy duty keyed chuck holds up to 1 2" drill shank All position diaphragm carburetor, with purge pump, allows operation at any angle Heavy duty gear reduction converts engine power