This is the High-Torque Digital Waterproof Steering Servo for the Traxxas X-Maxx Monster Truck, TRAD75**.                                                                                                  FEATURES: Ball bearing equipped  Preinstalled aluminum heat sink to help dissipate heat and prolong servo life                                                                                                                                          INCLUDES: High-Torque Digital Waterproof Steering Servo with Wire Lead and Connector                                                                                                                                           SPECS:    Torque: 365oz/in                                                                    Speed: 0.17 sec/60° @ 6V                                                            Dimensions: 1.97 x 2.0 x 0.98" (50 x 51.5 x 24.9mm) not including heat sink                                                                         Weight: 3.6oz (103g) including heat sink