Four steel poles with four linear ball bearings ensures stable, accurate and vibration-free cutting; large dimensional lumber capacity (2 x 12 at 90 degrees and 2 x 8 at 45 degrees); double sliding mechanism for lighter, more compact design; weighs only 27.6 lbs.; conveniently located carrying handle; includes carbide tipped blade, vertical vise, socket wrench, dust bag, triangular rule, 2 ea extension wings.