This Handbrake Module is supplied assembled and ready to fit to your ARRMA All-Road modelFeatures:Adds a mechanical brake to the rear wheels of your vehicle, allowing you to perform handbrake turns and initiate drifts - Supplied sub-assembled for quick and simple installation to your vehicle - Manufactured from strong steel and tough composite materials - Requires a standard size servo and a three channel radio system - 23, 24 and 25T servo horns suppliedIncludes:1 x Assembled Handbrake Module 1 x 23T Servo Horn 1 x 24T Servo Horn 1 x 25T Servo HornRequires:Recommended to be used with the 3-channel Spektrum DX3 Transmitter, SR6110AT Receiver and S650 Servo