The Klein Tools 32308 Adjustable Length Screwdriver functions both as a multi-bit screwdriver and impact driver attachments. With this screwdriver, there is no need to run back to a tool bag. Industrial-strength bits are conveniently housed in the handle. Simply adjust the length of the blades to allow for easier access or remove to use with an impact driver. Powerful rare earth magnets secure bits and fasteners while the cushion-grip handle provides outstanding comfort and control.