This rotary hammer drill features a brushless motor for 25 percent more power, 50 percent longer run time and 10 times more life than a brushed-motor rotary hammer drill. SDS-Plus chuck, built-in LED work light, and delivers 1.6 ft-lb of impact to break up concrete or masonry. Five functions include a drill, hammer drill, chisel, bit rotation and impulse tile drilling. Dual-safety clutch system for maximizing protecting during use. Anti-vibration design and textured over-mould grip for user comfort and control. Stackable, easy-to-transport slide-lock case protects against dust, water and impact damage. Includes Caterpillar batteries and charger; the battery is part of a system that supports all tools with the 18V cordless power tool line from Caterpillar. (For optimal performance, run time and protection, use a 5.0Ah lithium-ion rechargeable battery.)