The WORX WX254L SD Semi-Automatic Power Screwdriver comes complete with 12 driving bits. The tool is of plastic, rubber, and steel construction; making it hardwearing and suitable for use in most environments. It features slide action bit selection and two rapid reload cartridges. Each cartridge can hold six bits, meaning you never lose the bit you need. The battery charger is included in the kit and the 4-volt Lithium-Ion battery can hold its charge for up to 18 months.