Precision component screwdriver machined to exact standards to ensure a perfect fit on compatible component fasteners Featuring an ergonomic, CNC machined and hard anodized 6061 aluminum handle 5mm precision ground flat blade.   Park Tool ScrewDriver 5mm Flatblade Precision component screwdriver machined to exact standards to ensure a perfect fit on compatible component fasteners featuring an ergonomic, cnc machined and hard anodized 6061 aluminum handle 5mm precision ground flat blade covered by park tool's legendary limited lifetime warranty