Machine description: 2007 US EPA Label, CARB Compliant, Cummins 4B3.9-C75 67 hp 3.9 L Diesel Engine, 6.5 in Wide x 102 in Long Dirt Trencher Chain, HD125 Backhoe Attachment, Straight Blade Closing Time: 2024-06-10 01:27:0... more info about the 2007 Astec RT660.