Have been a customer of flex head tees since meeting them at a golf show at least ten years ago. I've been using them ever since. The consistency of having the ball the same height for every tee shot has improved my game and help lower my scores. I not only use the 1 1/2 inch ones for the driver I also use the shortest one for the par three holes with the same consistency as the taller one. Thanks for the great product. I'm a customer for life.