I first saw the Arsenal Roller at Austad's golf in St. Cloud, MN. I liked the idea behind it: No matter how you swing the putter you always hit the ball basically the same with this putter. The ball comes off the putter with little or no spin or bounce. After buying it and using it I found that to be true. Even misfits turn out to be good putts. My putting has noticeably improved. I'm not sure way this putter didn't catch on. All I know is that it will be in my bag a long time.