Hardened and tempered Chrome Vanadium steel bar with high chrome finish. Long, slim style handle and spring loaded socket retention. Comfortable soft grip handle. Fully replaceable knuckle joint*. One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. Hardened and tempered Chrome Vanadium steel bar with high chrome finish. Long, slim style handle and spring loaded socket retention. Comfortable soft grip handle. Fully replaceable knuckle joint*. Lifetime guarantee*. *Note: Knuckle joints are not covered by the lifetime guarantee and are treated as consumable items.