ITEM NO: ANCE1648 5PCS Torque Multiplier is made of Chrome Molybdenum Alloy Steel High-efficiency planetary gear sets achieve high output torque from low input torque Gear Ratio - 1:12.8 Torque Ratio - 1:10 Tolerance of torque accuracy ±6% Bar type design for easy access in confined spaces Special anti backlash device can prevent incidental reverse force during operation Applications:Industry, construction sites, car and truck garages, agricultural technology, bridge, aircraft and railway construction, shipbuilding, refineries and etc. BLOW CASE: W358 x D315 x H130 (mm)