Includes:Two ball bearings

This is an optional Axial Machined Aluminum Front Shock Tower

The ball bearing supported output shaft and sturdy gear trains are preferred for smaller glow and electric airplanes

Rod ends made of tough

Direct replacement part

Hitec HS-81 Standard Micro Servo 31081S Drill Bits Includes:Two ball bearingsHitec HS 81 Standard Micro Servo Description: You get two choices with Hitecs most popular servo the HS 81, resin or metal gears. A popular servo for smaller airplanes, helis, boats, cars and trucks, the HS 81 offers a fine balance between speed and torque. Specifications: Motor Type: 3 Pole Bearing Type: None Speed (4. 8V 6. 0V): 0. 11 0. 09 sec @ 60 deg. Torque oz. in. (4. 8V 6. 0V): 36 42 Torque kg. cm. (4. 8V 6. 0V): 2. 6 3. 0 Size in Inches: 1.