Key FeaturesUnique M/PMetal Gear Train TechnologyDurable High Torque ServoPerfect for larger sport planes or monster trucks and buggiesOverviewThe powerful HS – HS-645MG is one of Hitec??? Small fits most popular servos. It??? S The Perfect Choice For Those Larger Sport planes or monster trucks and buggies requiring a durable high torque servo. Featuring our unique M/P and metal gear train technology, the HS – HS-645MG offers one of the strongest gear trains available in any servo. Detailed information