The Worx electric screwdriver has a cool feature - semi-automatic bit changing, just slide the switch and a new bit is ready to go. The set consists of 6 different bits. It holds a charge for up to 18 months, put it in a drawer and even after six months it will be ready to go. Another useful thing is the screw holder. Now you can work with one hand without fear of dropping a screw, very convenient when you are on a ladder or in an awkward position. The bits are stored in a special cartridge inside the screwdriver. If you are looking for a reliable, comfortable and multifunctional screwdriver - look at the Worx 4V.