The striations, along with the serial number exclusive to each set of three, are used to identify the different boules during the game.
Striations
OBUT'S ADVICE
Pointers will prefer boules with striations:
• They have better adherence on difficult ground.
• It is easier to put a spin on them.
Shooters will prefer smooth boules:
• They do not adhere to the hand.
• They are released more easily.