Ash is the only wood used for the manufacture of hurleys, referred to as hurls in parts of Leinster and known as a" camán" in Irish, the timber sticks used in the game of hurling in Ireland. Hurleys are manufactured from the butt log (bottom 1.5-m of the stem) and from trees ideally of a diameter at breast height around 25–30 cm. Only fast-grown, straight, and knot-free ash can be used for this purpose. Due to the lack of available ash in Ireland, over 75% of the timber needed to produce the 350,000 hurleys required for the game annually must be imported, mostly from Eastern European countries. The importance of ash timber to the game of hurling is reflected in the fact that the game is referred to all over Ireland as "The Clash of the Ash".