Mechanical Pencil Xtra Strong, 0.9mm, Assorted, 24/Pack, Sold as 24 Each Mechanical pencil with classic wood case pencil design. 1 BIC? Pencil = 2-1/2 wood case pencils. Perfect for students. Available in yellow barrels and assorted colorful barrels with contrasting clip/nose cone colors. Smooth writing lead does not smudge and erases cleanly.