SmithCo Side Dump Quad Axle Model SX4-4936 36' Tub AR400 1/4" Steel Round Bottom 48'6" Overall Length 2" Kingpin with 18" setting 24 Cubic Yard / Waterfull and 32 Cubic Yard / Heaped Two Speed Landing Gear Remote Grease Zerks for cylinder pins Four 25,000# axles. Front and Rear Lift - Non Steerable - 54+54+60 spread (14' overall) Air Ride Suspension Eight Aluminum Wheels Super Singles tires 385/65 22.5 Front and Rear Thermoformed Plastic Fenders Anti Skid Brake Sensor on 1 axle Bolt On Push Block LED lights Electric Mesh Tarp with Cab Controls ​SMITHCO SX4 side dump​