The LEXIVON Impact Universal Joint - Patented SLIM Design is built to professional-grade standards. New SLIM body allowing you to access narrow & deep spaces, Trendy matte black & rich chrome coat now easy to spot in darker work environments. Ball spring design enables smooth 360-degree rotation, the SLIM impact universal joint set reaches all fasteners, even in tough spots, while the spring-loaded detent ball provides extreme grip preventing the joint socket from dropping. Fully impact-grade universal joint sockets made from robust heat-treated Chrome-Molybdenum alloy steel, offering the highest quality for a powerful product enabling use with any high torque impact gun. Your SLIM swivel socket adapters are coated with Manganese Phosphate treatment for maximum corrosion/rust protection & featuring Laser-etched sizes providing a prestigious convenience in recognizing the desired size.