The extreme power and durability of the HS-900SGS and HS-1000SGT is astounding. Designed from the ground up for industrial applications, these servos are the perfect answer for demanding giant scale aircraft pilots and 1/5th scale buggy and truggy drivers. Featuring all aluminum, EMI-shielded cases, solid steel gears and non-programmable digital circuits, these servos can take a beating while delivering precise performance. Designed to operate on 3 and 4-cell LiPo batteries, the HS-900SGS provides swift speed while the HS-1000SGT brings hefty torque.