Material: rubber, Size: height from high to low: 37mm/32mm/17mm/12mm, Same top width 19mm Same bottom width 31mm Package included: Golf tees, each set includes 4 different heights, enough to meet your daily practice, whether indoor or outdoor High-quality materials: The golf tees are made of high-quality and durable rubber, with a simple but classic shape design that can be reused. Advantages: Golf tees have different heights, you can choose different heights to practice according to your needs, get a perfect experience, easy to use on hard ground. Easy to use: When you want to practice golf in winter or on a hard indoor floor, it is difficult to put the tee in the ground. At this time, you need a golf tee to help you solve the problem. Application: For beginners or golf enthusiasts, golf tee is a perfect choice, 4 heights can be switched at will help you to exercise more skills.