2 pack, 2 feet', square #2 impact ready screwdriving bit with magnetic sleeve eliminates screw wobble, flex torque have increases durability for long life, cnc machined resulting in accurate manufacturing, optimal fit into screw recess, reflex core allows 2 inches bits flex up to 15 degree to reduce breakage, part of 10 times magnetic screw lock system, fastener retention which minimizes drops & reduces wobbling