Bosch Bare-Tool RHH180B 18-Volt Lithium-Ion 3/4-Inch SDS-plus Rotary Hammer Unbeatable Run Time - Up to 30% more than best competitor in 18V class Brushless EC Motor - Same power, but smaller and lighter weight with more efficiency, less maintenance and longer life. Pneumatic Hammer Mechanism - Bosch Engineered for best drilling performance LED Light - More convenience in low light applications FPS and ECP - Tool works with SlimPacks and FatPacks, monitors battery to reach maximum life.