HS-7955TG High Torque Ball Bearing Titanium Gear Digital Standard Servo from Hitec - HRC37955S
Based on the powerhouse HS-5955TG servo the HS-7955TG has the added benefit of Hitec's G2 second generation programmable digital circuit. This new circuit has twice the resolution of our original circuit while adding programmable overload protection. The HS-7955TG has been designed for the most demanding hobby applications including the largest aircraft. Featuring a titanic 333 oz.-in. of torque at 6.0 volts, all this power is harnessed by incorporating the industries first Titanium gears for incredible wear resistance and two strong hardened steel gear pins and axial brass bushing in the servo case.
What is a coreless motor?
A conventional servo motor has a steel core armature wrapped with wire that spins inside the magnets. In a coreless design, the armature uses a wire mesh that forms a cup that spins around the outside of the magnet. This arrangement is much lighter resulting in smoother operation and faster response time.
Features:

Titanium gears for much longer life than conventional metal gears
Fully programmable digital technology
Dual ball bearing supported output shaft
Coreless motor for precise centering and accuracy
G2 programmable digital circuit

Includes:

1x HS-7955TG high torque digital titanium gear standard servo with universal connector
1x 2" servo arm
1x Blue anodized aluminum 1" servo arm
1x Heavy duty 1-1\/2" servo arm
1x Heavy duty 2-3\/4" servo arm
1x Black disc servo horn
4x 2 x 14mm mounting screws
4x brass eyelets
4x black rubber vibration isolators
1x Plastic case and programming instruction sheet
Hitec decals

Programmable features:

Dead band width
Direction of rotation
Speed of rotation (slower)
End points
Neutral points
Fail safe On\/Off
Fail safe point
Resolution* (default is high resolution)
Overload protection* (default is off)
(*these features are only programmable with the HFP-20 field programmer)