Manufactured from hardened and tempered Chrome Molybdenum steel. Easily extract nuts, bolts and screws that are rusted, worn, painted over, or even completely stripped or broken.Slim design well-suited for tight access and recesses where traditional hex extractors do not fit. Internal thread with reverse spiral flutes has a good grip on damaged bolts, providing excellent torque. Includes standard 1/4"Sq and 3/8"Sq Drive head hex adapters, allowing the use of hand, air, or power tools. Includes a knock-out pin for easy removal of damaged bolts once removed.Supplied in a durable storage case for easy transportation. Model No. AK8132CHROME MOLYBDENUM STEEL – Hardened and tempered steel for strength and durability. SLIM DESIGN - Well-suited for tight access and recesses where traditional hex extractors will not fit.KNOCK OUT PINS – For easy removal of damaged bolts and nuts once removed. EASILY REMOVE BROKEN NUTS – Easily extract nuts, bolts and screws that are rusted, worn, painted over or even completely stripped or broken. REVERSE SPIRAL FLUTES – Internal thread with reverse spiral flutes allows for secure grip on damaged bolts, providing excellent torque. COMPRHENSIVE KIT – Includes 1/4” and 3/8”Sq Drive hex adaptors, allowing the use of both hand or air power tools. SUPPLIED IN STORAGE CASE – For easy transportation and storage.