Product Feature: Product Name: Metal Gear Micro Servos Servo Type: Digital Product Size: 22x11x27mm Product Weight: 13g Stall Torque: 2.0KG/cm Response Speed: 0.11s/60 Degree Rotation Angle: Max 180 Degree Operating Voltage: 4.8V Operating Temperature: 0 to 55 Degree Celsius Structural Material: Copper metal teeth, coreless motor, double ball bearing Accessories: Multi-arm, 26cm wire, fixing screws Application Range: Swash plate servo, fixed wing, helicopters KT, fluttering, gliding, small robots, and other models of Mini Robotic Car, Mini Ship, Helicopter and Airplane Controls .