... -toxic ecology environmetal protection material. The Wool polishing ball is one kind of thee biodegradation,thenon -toxic ecology ... inch (125), 6-inch (150), 7-inch (180) 8-inch (200) ,the size and specification is according to your ... 2,3,4,5,6,7,8-inch ball of wool and rabbit hair ball polishing, and can produce 2, ... 3,4,5,6,7,8-inch wool wool textile ...