Bosch Bare-Tool PS41BN 12-Volt Max Lithium-Ion 1/4-Inch Hex Impact Driver  with Exact-Fit L-BOXX Tool Insert Tray LIGHTWEIGHT: The Bosch 12V PS41BN Hex Impact Driver is the most compact impact driver in its class, making it great for over the head continuous work. POWER: Despite its light weight, the PS41BN offers up to 930 inches-per-pound of torque thanks to Boschs hammer-and-anvil system. SPEED: The PS41BN also features speed and efficiency producing a no-load bpm of 0-3,100 and a max 2.600 rpm. STORAGE: The Bosch PS41BN hex impact driver comes complete with a Custom Exact-Fit L-BOXX b inlay for ideal tool storage and organization. VISIBILITY: The impact driver provides convenience with three LED lights to help illuminate dark working areas.