Our new strong and speedy digital HS-5070MH possess the performance qualities necessary for the new class of 42-48 inch performance 3D aircraft and 450-size helicopters. Featuring Hitec’s durable metal gears, cored motors, top ball bearings and Generation 1 circuitry, these new additions to our vast servo family will have all your planes and helis flying with remarkable precision and power. The programmable HS-5070MH delivers an impressive 53 oz.-in. of torque at 7.4 volts. Fast, forceful, fantastic! We Are Hitec!