Color: Blue,Green ,Grey  Ratio i: 5:1, 7.5:1, 10:1, 15:1, 20:1, 25:1, 30:1, 40:1, 50:1, 60:1, 80:1, 100:1, extra cost for ratio 5:1 is 56 USD/PC  The output hole: Φ25-Φ50 Input Flange: 130*130mm Gearing Arrangement: Worm Origin Mainland: China Certification: CE/RoHS/IAF/CNAS/ISO9001/ISO45001/ISO14001 Output Torque: 80N.m-233 N.m Worm Gear Material: Tin Bronze Application Matched: with Servo/Stepper Motor Video outgoing-inspection: Provide Rated Input Power: 0.37-3KW Material of Housing: Aluminum Flange: Round / Square Approximate gross weight: 10 Kg/pc