Klein Tools’ Adjustable Length Screwdrivers function both as multi-bit screwdrivers and impact driver attachments. With these screwdrivers, there is no need to run back to your 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. Insulated: No. Handle Material: Plastic.