Crossword clues for Tennis stringing. 3 lettersAnswerClueGUTTennis string.GUTTennis stringing.GUTOld tennis racket string materialGUTTennis racket strings.GUTTennis-racquet stringsCATGUTTennis racket string materialCATGUTMaterial in tennis racket stringsCATGUTOnetime material for tennis racket stringsCATGUTTennis racket strings, onceNYLONLike the strings on many tennis rackets