Expert Quality, manufactured from chrome vanadium steel hardened, tempered, chrome plated and polished for corrosion protection. Specially designed chrome molybdenum hinged joint head for extra torque. Spring - loaded ball bearing for secure socket holding. Manufactured and tested generally in accordance with DIN3122 and ISO3315 Specifications Features and Benefits • Expert Quality • Specially designed chrome molybdenum hinged joint head for extra torque • Chrome vanadium steel hardened, tempered, chrome plated and polished Contents 1 x Breaker Bar, 1/2" Sq. Dr., 600mm