The SC-1251MG is a high speed, low profile servo which combines leading edge technology with metal gear train to make an ideal option when space or weight is a concern."Plus" series servos feature Soft Start and Sanwa SSR compatibility.Features:Metal gear train ensures durability under harsh situations.Aluminum case provides cooler operating temperatures.Specifications:Torque @ 4.8v - 7.0kg/97.2oz-inTorque @ 6v - 9.0kg/125.0oz-inSpeed @ 4.8v - 0.10 sec/60 degSpeed @ 6v - 0.09 sec/60 degDimensions L x W x H (mm): 40.8 x 20.2 x 25.4Weight: 44.5g