Sunex 9703b 1/2-Inch Drive 30-250-Feet-Pound Heavy Duty Wrench Housed in a convenient blow mold storage case Accuracy within + or - 3% Guaranteed to meet or exceed federal spec # GGW-00686 All parts, including shaft, are heat treated, carbonized, quenched and twice tempered for long life and accurate performance 1/2-Inch drive, 30-250ft/lbs.