Riddle the ninth!What is made of wo

Riddle the ninth!
What is made of wood, but no saw on Earth is sharp enough to cut?

النتائج (العربية) 1:

Puzzle ninth! What is made ​​of wood, but there is no opinion on earth sharp enough to cut?

النتائج (العربية) 2:

Ninth puzzle!
What it is made ​​of wood, but not the saw on the ground is sharp enough to cut?

النتائج (العربية) 3:

Ninth puzzle!
What is made ​​of wood, but do not see on the ground is a sharp cut enough?