JR S8915 HV XBus Servo. All Alloy Case
Hi Speed, suitable for Heli
Specifications: 
@6.6V 27.6kg-cm    Speed: 0.07 sec/60゜
@7.4V 31.0kg-cm    Speed: 0.06 sec/60゜
@8.4V 35.2kg-cm    Speed: 0.05 sec/60゜
Weight: 77g
Dimensions:  39.5mm x 20.5mm x 40.0 mm
All AlloyCase
**** Servo Arm Not Included!