Features and Benefits: * Increases the range of your torque wrench as much as 4 to 1 * Designed with four pinion gears in a compact housing * Frictional losses in the gear train may cause a torque loss of 10% to 20% * Reaction bar length: 18" This multiplier increases the range of your torque wrench as much as 14 to 1. Designed with four pinion gears in a compact housing, it is built durable, for professional use.