IIO1003 Features: * Increases the range of your torque wrench as much as 14 to 1 * Designed with four pinion gears in a compact housing * Frictional losses in the gear train may cause a torque loss of 10pct to 20pct * Ratio: 4:1 * Drive output: 3/4 in. * Head measurements: 3.35 in. * Drive input: 1/2 in. * Torque Multiplier Max Output 1000ft/lbs. * Repair only up to 90 days Dimensions: * Weight: 7 lbs. * Reaction bar length: 18 in.