All tools are professional quality, made of high-grade chrome vanadium steelCountry of Origin: US 1/2″ DRIVE EXTENSIONS AND ACCESSORIESHigh-Polished Chrome Finish Product CodeDescriptionLength (Inches)S-102PExtension2S-110PExtension5S-115PExtension10S-121PExtension20 Features:• Chrome plating provides increased protection from rust and corrosion.• Ball and spring socket retention.• Spinner disk is ideal for fast turn down of fasteners.