Sly, I just got mine after Christmas. I wondered, too, about the reverse feature. But, just this week, while drilling out a couple of old holes, I found I was getting hung up. I assume it was due to the old hole not being vertical like it was supposed to. Or it could have been unequal freezing as it sat unused. But by popping the reverse, I backed out like a pro! Just passing on the info. Everyone probably knew this already! Keep drilling!