General description This 'next generation' twin-pack combines two fantastic DeWalt power tools with new, more compact battery technology. The DCD999 is a powerful brushless Combi Hammer Drill Driver, while the DCF850 is a small and powerful impact driver ideal for automotive and industrial applications. The DCF850 provides 205 Nm of torque in a compact body of just 100 mm, offering enhanced control with a 3 mode switch, including Precision Drive to prevent damage during smaller jobs. An incorporated LED light improves visibility in difficult environments. Please note that this is a bare tool twin pack - no batteries or chargers are supplied. Technical specifications DCD999 Brushless Motor: 112 Nm torque, 1219 W (using 6Ah) DCF850 Brushless Motor: Up to 205 Nm torque DCF850 dimensions: 100 mm 13 mm ratcheting keyless chuck with automatic spindle lock 3 Position LED torch with High/Medium/Low settings Electronic Clutch with 11 position adjustable torque control 1/4" (6.35 mm) 'drop in'