I've used it twice on a 5000 sq ft lawn area and it works perfectly! When you stop, the flow of material automatically stops!
The frame, wheels, tub, and above all the two most critical parts -- the mechanism to adjust the volume, and the gearing mechanism -- are pro or farm grade construction.
Easy to assemble, and is a well made piece. What's more, it works wonderfully!
I only had to assemble the tow assembly. It took 20 min.
I loaded it with 50 lbs of fertilizer each time and it handled it well. I could have probably fit another 50 lbs worth in the hopper, but I wanted to take it easy on her first time out.