310GM Size (cutting width)60"PTO HP ratingup to 30Weight435 lbs. CONFIGURE \n Standard Optional 310GM Specifications3-PT mounted (floating hitch)Category IDischarge (rear only)RearDischarge Safety ChainSize (cutting width)60"PTO HP ratingup to 30Number of Blades3Blade speed2,630 (rpm)Standard PTO540 (rpm)V Belt DriveCutting Height Range1 to 4"Solid Rubber Gauge Wheels (fully rotating)4Weight435 lbs. 320GM Size (cutting width)72"PTO HP ratingup to 40Weight500 lbs. CONFIGURE \n Standard Optional 320GM Specifications3-PT mounted (floating hitch)Category IDischarge (rear only)RearDischarge Safety ChainSize (cutting width)72"PTO HP ratingup to 40Number of Blades3Blade speed2,230 (rpm)Standard PTO540 (rpm)V Belt DriveCutting Height Range1 to 4"Solid Rubber Gauge Wheels (fully rotating)4Weight500 lbs. 330GM Size (cutting width)90"PTO HP ratingup to 60Weight683 lbs. CONFIGURE \n Standard Optional 330GM Specifications3-PT mounted (floating hitch)Category IDischarge (rear only)RearDischarge Safety ChainSize (cutting width)90"PTO HP ratingup to 60Number of Blades5Blade speed2,630 (rpm)Standard PTO540 (rpm)V Belt DriveCutting Height Range1 to 4"Solid Rubber Gauge Wheels (fully rotating)4Weight683 lbs.