Providing the ultimate in both torque and speed combined, the HS-6975HB servo features the Karbonite gear technology that offers four times the strength of nylon with no flex or wear resulting in incredible precision and that “locked in feel”.   The HS-6975HB is an excellent choice for pattern planes and high performance helicopters up to size 90. This servo is considered one of the smoothest servos on the market today, offering excellent resolution, centering, and holding power that is without comparison to any other servo in the same price class.