NEW HTT TRANSMISSION(tm) (High Torque Transmission) with a heavy duty clutch for fast, solid engagements that transfers engine energy for additional torque. Connects to any 12 volt wet cell battery, with deep cycle batteries offering the best performance. HTT TRANSMISSION(tm) allows 30% more holes on a single battery charge. INCLUDES the NEW E-Z CONNECT(tm) Connection Collar - NO TOOLS REQUIRED to remove the drill assembly. Just slide the E-Z CONNECT(tm) down, pull the pin out, remove the drill assembly.