KST BLS815v2 RC Brushless Standard Cyclic ServoThe KST BLS815 brushless servo, in a robust aluminum housing with a precision steel gearbox, is a power hunter among the servos. High quality workmanship, speedy positioning times and perfect resetting accuracy make the servo universally applicable. We also provide the BLS825 Brushless HV Servos. Features Ultra High Torque & Excellent Speed Hardened Steel Gear CNC Aluminium Case High Quality Brushless Motor Dual Ball Bearings Ideal for 550 700 Class