Name:6v20kg-cm digital servo; Size :40.2mm 20.1mm 38.8mm 48.0mm 10mm; weight:56g 0.2(1.46oz); Gear type:titanium gear; speed:0.13sec/60o at (6v) (238.9 oz-in)17.2kg.Cm.At(4.8v) The features:waterproof; plastic case, resist heat and corrosion; aluminium middle hull, easy to eliminate heat;adopt high quality coreless motor. -