Move the item name to the beginning of a line, with the description following.

Bone: Left/Right click to change a blocks's data value

This way the printout will have a more structured look.

Originally suggested by Jadedwolf

Also I suggest adding color and bold/italics to the formatting for emphasis. Things that were not in the game when you created the menu.

Fixed in release http://dev.bukkit.org/bukkit-plugins/toolbelt/files/14-tool-belt_0-9/