I’m stock now!!!!
The updated + version now has duel ball bearings and improved specs.
Application
3D EP Aircraft, Indoor Foam, EF1 Pylon, F3K, F3P & DLG, HLG. 
Specifications
Torque At 3.7V2.5 kg-cm / 34.7 oz-inTorque At 6.0V4.0 kg-cm / 55.6 oz-inTorque At 7.4V4.7 kg-cm / 65.3 oz-inTorque At 8.4V5.3 kg-cm / 73.6 oz-inSpeed At 3.7V0.11 sec / 60°Speed At 6.0V0.07 sec / 60°Speed At 7.4V0.06 sec / 60°Speed At 8.4V0.05 sec / 60° 
Power Supply
Operating Voltage Range3.7V ~ 8.4V ( 1S or 2S Li-Poly & 2S Li-Fe)Application / Suitable3D EP Aircraft, F3K, F3P & DLG, HLG. 
Control Specifications
Control SystemDigital Controller 12-Bits ( 4096 Steps ) / Frequency：250Hz / Neutral：1500 or 1520usDead Band Width0.002ms ( 2us )Frame Rate (Signal repeat rate)     3ms ( Maximum )Rotating Direction                              Clockwise / When Pulse Traveling 1500 ~ 2100u secondOperating Travel90° (When 1100 ~ 1900 μ sec) 
Mechanical Specifications
Ball Bearing2 Brass BushingGearAll Metal GearsMotorCoreless MotorHorn / Gear Spline25 Teeth ( Same as F-Type )Connected Cable Length150 mm ( 5.9 in )Connected HousingUniversal Connector ( J-Type ) 
Dimmensions & Weight
Dimension (mm)23.2 x 10 x 23 mm / 0.91 x 0.39 x 0.90 inWeight (gram)11.3 ± 0.5 grams / 0.39 oz​