Specifications include, but are not limited to: 1-AXLES: 1.1) Front - 12,000 lbs. with 11,900 lbs. springs 1.2) Rear - Two speed 21,000 lbs. with 21,000 air bag suspension, solid axle during sweep and dump, fully sprung during transport. 1.3) Ratio - 5.86/7.17:1 1.4) Gross Vehicle Weight Rated (GVWR) - 33,000 lbs. 2- BRAKES: Service: 2.1) Type - Full air, anti-lock 2.2) Front – 15 in. x 5 in. drum 2.3) Rear - 16.5 in. x 7 in. drum 2.4) Compressor Capacity – 18.7 CFM min. 2.5) Auto slack adjusters, front and rear Parking: 2.6) Type - Spring set, air release 2.7) Air Dryer - 3- CHASSIS: 3.1) Manufacturer: Peterbuilt 3.2) Model – 220 Cab over Frame: 3.3) Type - Rail, High Strength, 120,000 PSI, 1.4 million RBM 3.4) Size – 10.25 in. x 3.5 in. x .25 in. 3.5) Exhaust - Vertical left side center behind cab