The study also showed that the coefficient of restitution for the flagstick is relatively low, and that direct impacts with the stick, regardless of the type, tend to stop the ball fairly quickly, helping it to finish in the hole every time at a speed that sends the ball five to seven feet past the hole. Further tests of the different flagsticks showed that fiberglass sticks—those most commonly used on the PGA Tour—were the most forgiving, but while multi-diameter and tapered aluminum pins rejected putts that otherwise would have been made, even the fiberglass pin caused more putts to have been missed than were made with the flagstick out.