Name6v40kg-cm digital servo; Size :a60.1mm b30.1mm c59.7mm d68.5mm e16.9mm; weight:177.5g6.25oz; Gear type:metal gear; Speed:0.20sec/60⺠at (6v) 0.18sec/60⺠at (7.2v) Torque:(465 oz-in)33.5kg.Cm.At(6v) (553 oz-in)39.8kg.Cm.At(7.2v) Features:waterproof; plastic case, resist heat and corrosion; aluminium middle hull, easy to eliminate heat;adopt high quality coreless motor. -