1.High torque,no oil leaking 2.Standardization ,multispecies 3.Low noise long life.high efficiency 4. ... and reversing conditions:Specifications: Single Stage/ 65, 85, 100, 120, 150 double stage/ 1065, 1285, 1510 Ratios: Single Stage/ 9, 11 ... , 989, 1225, 1849, 2537 Input Power: 0.04~3KWOutput Torque: 2.7~250N.m Designed for foot and flanged installation