Craftsman C3 19.2 Volt Drill and Impact Driver Combo Kit The Craftsman C3 19.2 Volt 1/2-inch Drill/Driver comes equipped with: 21-position adjustable torque clutch which allows the bit to stop at various torque setting to avoid a powerful motor that produces up to 300-in-lbs of torque to handle most of your drilling and drivin 1/2-inch single-sleeve, keyless chuck to hand tighten bits securely without a key. 2 Speed gear box for either high torque or high speed applications: 0-350 and 0-1,300 RPM no load