This full featured, 2 function, hardwire or harnessed decoder is a robust workhorse, capable of taking almost anything you can throw at it. The harness has 6 inch bare wires. Included is our auto-adjusting BEMF for outstanding slow speed performance and hassle free set up. Also includes Quiet Drive for super quiet engine performance. Dimensions: 0.661″ x 0.969″ x 0.217″ or 16.79mm 24.61mm 5.51mm.