These were flat on the end. So maybe saw? They were straight too. I need a few more and later choose the "Weyerhaeuser 1/2 in x 4 ft. #4 Rebar" because I only needed a few more and could be delivered from the store. The Weyerhaeuser were not straight at all and had to use a vise and hammer to get them straight. Not sure if this was because of how they were cut at the store. No issues with the Boise.
It depends on where they are located in the country. We have both types.
It’s based on the diameter of the bar. #4 = ½” #3 = 3/8”