Sealey Premier Knuckle for AK7315 1/2"Sq Drive Features: Knuckle joint for Model No. AK7315 1/2"Sq Drive Extendable Breaker Bar. Technical Details: • Knuckle joint for Model No. AK7315 1/2"Sq Drive Extendable Breaker Bar. • Model No. AK7315/RK • Model No. AK7315/RK Additional Information: • One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. • Knuckle joint for Model No. AK7315 1/2"Sq Drive Extendable Breaker Bar. *Note: Knuckle joints are not covered by lifetime guarantee and are treated as consumable items.