Reefs RC 299LP High Torque/Speed Brushless Low Profile Servo. This low profile servo features all steel gears and a CNC machined aluminum case. 

Features:
Waterproof resistant design
CNC Machined Aluminum Case
Programmable with the Reefs Link (SEHREEFS64 - Sold Separately)
Steel internal gears
BEC Not Required, Recommended 
Specifications:
Input Voltage: 4.8-8.4V
Internal: Steel Gears / All CNC Aluminum Casing
Bearing Type: 2BB
Weight: 2.0oz
Dimension: 1.6 x .79 x 1.0 (LWH)
Torque:
6.0V: 278oz
7.4V: 299oz
8.4V: 313oz
Speed:
6.0V: .07sec
7.4V: .06sec
8.4V: .057sec
Spline: 25T
Dead Band Width: 2¦Ìs
BEC: Not Required