Milwaukee 2590-20p Combo kit with M12 1/4" Hex Screwdriver and ipod/MP3 ready M12 Radio M12 radio is equipped with premium weatherproof aluminum speakers 10 1/2-inch narrow, 3.5 lbs, and is powered by M12 lithium-ion battery pack or AC adaptor 2401-20 screwdriver is variable speed, and has quick 1/4" hex change lightweight with a powerful 175 in-lbs of torque durable long lasting, home owner approved and commercial-grade tested