Meeting user needs for a lightweight rotary hammer featuring compact portability for drilling small diameter holes in overhead or tight spaces, the RHS181 Compact Rotary Hammer doesn't compromise performance for convenience. The high performance motor offers increased power, extended life and amplified stall torque - making it the most powerful compact SDS-plus 18-Volt Lithium-Ion rotary hammer on the market. A variable speed trigger enables speed regulation, while a two-mode drive allows users to switch between drilling with hammer action and drilling only. The Bosch-engineered compact angle gear and the pneumatic hammer mechanism ensure maximum performance and enhance tool life. The RHS181 also boasts superior ergonomics, improving handling and reducing user fatigue. RHS181 comes with an SDS-plus chuck and delivers optimal performance when drilling the most common diameters, including 3/16-Inch, 1/4-Inch and 3/8-Inch holes. The LED light illuminates dark work spaces.