1/2" Reversible Air DrillMfr #: 1704 Reversible air drill reversible air drill delivers full power in both forward and reverse setting Handle exhaust internally redirected exhaust is vented through the handle away from your work area 1 2 inch chuck 1 2 inch keyed chuck accepts a wide range of bits and drivers for a variety of uses Free speed maximum free running speed 800 rpm Variable speed throttle positive speed control with trigger style variable speed throttle