Introducing the Professional Tee System (PTS) by Pride Golf Tee. These tees are available in 4 different lengths ranging from 2 & 1/8" to 4" (the longest golf tee allowed by USGA rules). Each high quality wood golf tee has a unique painted lining system that identifies not only the tee length but how far to place the tee in the ground. Red , Yellow, Blue, and Green. Used by PGA Tour professionals on all three major tours.