Bosch Drill Kit: 18V DC, Compact, 1/2 in Chuck, 2,100 RPM Max., 755 in-lb Max Torque, (2) 4.0 Ah

These cordless pistol-grip drills are powered by Bosch batteries of a compatible series and matching voltage. Their pistol grip eases handling and operation for holemaking and fastening tasks. Tools using lower-voltage batteries are generally lighter and more compact but less powerful than tools using higher-voltage batteries. Tools using lower-capacity (Ah) batteries are less bulky but store less power than tools using higher-capacity batteries. Tool batteries can also power other tools of the same brand, battery series, and voltage.