Name8.5v13kg-cm digital servo; Size :a40.2mm b20.1mm c38.8mm d48.0mm e10mm; weight:56g �0.21.46oz); Gear type:titanium gear; Speed:0.13sec/60� at (7.4v) 0.11sec/60� at (8.5v) Torque:(168 oz-in)12.1kg.Cm.At(7.4v) (201 oz-in)14.5kg.Cm.At(8.5v) Digital servos features: support high voltage;waterproof; plastic case, resist heat and corrosion; aluminium middle hull, easy to eliminate heat;adopt high quality coreless motor. -