The TourTee Combo (5 Pack) offers less friction for more distance. The small nodules on the top of the tee promote a low-spin launch for added distance and control. Features & Benefits: Virtually unbreakable Barbed Point helps prevent the tee from flying away  Showed an increase in distance over competitors during testing Doubles as a groove cleaner and divot tool Pack includes 3x large (3.15"), and 2x small tees (1.75")