This is the replacement High Torque Waterproof Servo for the Traxxas E-Maxx (TRAC92**). FEATURES Plastic waterproof blue case INCLUDES One high torque waterproof servo with J style connector REQUIRES Mounting in the E-Maxx SPECS Length 2.16"" (55mm) Width .78"" (20mm) Height 1.69"" (43mm) Weight 1.58oz (45g)