The M18 FUEL 44mm SDS Max Rotary Hammer Kit w/ ONE-KEY is designed for the professional user, allowing ultimate power, control, safety and productivity. The POWERSTATE Brushless Motor delivers 11J of impact energy that meets and rivals that of corded competition. REDLINK PLUS intelligence tool technology ensures maximum rotary drill performance and protects it from overload, overheating, and over discharge. Power through the toughest materials with the M18 REDLITHIUM™ HIGH OUTPUT™ 12.0Ah Battery, which delivers unmatched run-time in all applications when used with the rotary hammer drill. Our full feature hammer delivers maximum control and enhanced safety with the Electronic Clutch, which will stop rotating at 45 degrees when the tool gets bound up. This feature ensures safer work and more control while on the job. The cordless rotary hammer is compatible with ONE-KEY, wirelessly connecting to your smartphone to track and manage the tool’s performance and location. ONE-KEY integrated tool tracking gives you full visibility over how and where your tools are being used across your network of jobs and users.