We heard you call in so many ways, sometimes tip leater, other stud, nut and so on, but the term we use to define the part of the stick that comes in contact with the ball is cue tip.All of the tip is a layer of leather slightly curved to make it more capable of keeping plaster and rounded, usually is treated with sand paper. Rubbing the paper raises the hair making it soft.The essential feature of this last type is to ensure better control and longer life, better than the expansion due to the continual blows. The leather pig holds much better chalk.We offers the best brands: Kamui, Moori, Aramith, Zan, Talisman, Predator, Diamond, Da Vinci, Water buffalo, Otello, Fuji, Longoni and many other brands of world importance.