This is a non-slice tee that can help control slices and hooks. Includes one adjust tee. Total length is 80mm, and the lower part's height of 50mm may be a bit low, so please use the adjust tee. If you're struggling with slices and hooks even after changing your swing, please give this a try. It's a great product that can solve the problem without changing your swing. Featured on UUUM Golf YouTube's Namiki Lab and also introduced on YouTube by many others! For those with a swing speed of 45 or less, or those whose club isn't entering straight, it can also lead to increased distance by reducing spin. Because it doesn't directly touch the ball, the spin caused by the club's entry is significantly reduced, making it harder to spin and curve the ball. This product is used by teeing up the ball as shown in image 4, and then hitting the plastic surface of this product. The cause of slices and hooks is the friction between the ball and the face of the club, which creates spin and causes the ball to curve. However, by placing this product between the ball and the club face, the ball will physically not be rubbed, resulting in reduced spin and less curving. Size: Total length 80mm, Height 50mm Slice Tee: 5 pieces (white) Adjust Tee: 1 piece (color random) * Using the adjust tee, the height of the lower part increases from 50mm to 65mm. Golf Tee, Iron, Driver, Enjoy Golf!