John Deere 40 in. Tow-Behind Combination Aerator-Spreader 40 in. working width; up to 2 in. penetration, Spreader capacity of 100 lbs., 1.75 cu. ft. 132 steel tine tips, 8 in. diameter stars; galvanized steel, Calibrated flow control with adjustable stop feature 10.5 in. x 4 in. transport wheels; single lever engagement, Universal hitch connects to most riding lawn mowers and lawn tractors Includes hitch pin, Frame Material: Steel Model Number: AS-40JD