The Discraft Test Flight Z Zone GT 173-4g red disc is a high-quality disc golf disc designed for putting. With a speed rating of 4, this disc has a moderate glide rating of 3 and a fade rating of 3. Made from Z plastic in the United States, this disc is ideal for disc golf enthusiasts looking for a reliable and accurate putting disc. The Test Flight Zone GT model offers a stable and predictable flight pattern, making it a valuable addition to any disc golfer's collection.