The Savox SH-1350 is a micro sized, digital servo that is extremely strong for its size without having ot use higher voltage batteries which makes it great for a number of applications."Plus" series servos feature Soft Start and Sanwa SSR compatibility.Features:Aluminum middle case allows for cooler operating temperatures.Industrial plastic gear allows for a smooth and quiet operation yet remains durable.Dual ball bearing support.Specifications:Torque @ 4.8v - 3.7kg/51.4oz-inTorque @ 6v - 4.6kg/63.9oz-inSpeed @ 4.8v - 0.13 sec/60 degSpeed @ 6v - 0.11 sec/60 degDimensions L x W x H (mm): 35.0 x 15.0 x 29.2Weight: 26.0g