• Used to remove broken studs, bolts, socket screws and fittings for high torque applications • Aggressive left hand spiral design for extra gripping power • Set includes 15 hex drive sockets • 11-piece 1/2" hex drive sockets • 4-piece 5/8" hex drive sockets • Cover screws of 3-14 mm • Cover studs of 1/8" to 1/2" • High-performance alloy steel (Ni-Cr-Mo) material • Hardness: 51 HRC to 54 HRC • Special spline shape designed for removing damaged or broken studs, bolts, socket screws and fittings for high torque applications • Also available individually