DEWALT DCK299D1T1 FLEXVOLT 60V MAX / 20V MAX Lithium-Ion XR Brushless Hammerdrill and Impact Combo Kit Flexible - power of corded. Freedom of cordless. The world's first battery that automatically changes voltage when you change tools DCD996 20V MAX* 1/2" Hammer drill - 3-speed, high performance, all-metal transmission DCF887 20V MAX* 1/4" impact Driver - 1,825 in-lbs. of max torque, fast 0-3250 RPM, 0-3600 impacts per minute Dcb203 20V MAX XR 2.0Ah Lithium Ion battery - no memory & virtually no self-discharge for maximum productivity & less Downtime Dcb606 20V/60V MAX* FLEXVOLT 6.0 Ah/2.0 Ah Lithium Ion battery - automatically changes voltages when you change tools *Maximum initial battery voltage (measured without a workload) is 20 volts. Nominal voltage is 18