Bula (fr.

la boule - a ball) - the ball used to play pé tanque. Bule rig are made of copper, and professional carbon stee l (carbon) or stainless steel (INOX), sometimes (very rarely), br ass. Price of copper bullets is about 30 zł for 3 pieces and the prices of professional tournament bul vary between 150 zł, a 1000 zł. Bul sizes allowed are: hardness of the balls must not be less than 35 HRC (110 kg / mm ²). This limitation is associated with other behavior bul, depending on their hardness (soft ball to bounce less, so it is easier to strike and set them high lobami).