Bosch 18V 2-Tool Combo Kit with 1/2-Inch Drill/Driver, 1/4-Inch Impact Driver CLPK26-181, 2 Batteries, Charger and Contractor Bag Battery: Lithium-Ion,Battery Voltage: 18 Includes: DDB181 1/2" Compact Drill Driver, IDS181 1/4" Hex Impact Driver, (2) 1.5 Ah Slimpack Batteries, Charger, Carrying Bag, 2 Screw Driving Bit DDB181 Produces 1,300 RPM for fast drilling, DDB181 20+1 clutch settings and a variable-speed trigger IDS181  Produces 3,100 BPM to handle masonry work. IDS181  1,150 In.-Lbs. of optimized torque