The Milwaukee M18 4-Tool Combo Kit includes the M18 FUEL 1/2 " Hammer Drill/Driver, M18 FUEL 1/4" Hex Impact Driver, M18 FUEL Oscillating Multi-Tool, and LED Work Light. M18 FUEL tools are fully compatible with the Milwaukee M18 18-volt cordless system, featuring over 200 solutions. M18 FUEL features the most advanced cordless technology in the industry a POWERSTATE Brushless Motor, REDLINK PLUS Intelligence, and REDLITHIUM Battery Technology, resulting in longer motor life, longer run time, and more power. The M18 REDLITHIUM HIGH OUTPUT XC6.0 Battery Pack provides 50% more power and runs 50% cooler than M18 REDLITHIUM XC battery packs. The optimized combination of size and increased power provides a great solution for the entire range of M18 products.