2000-2 grinders are aim at the glass fiber degree of hardness to be high, easy to twine, the working conditions bad design the manufacture the powder essence glass fiber special purpose equipment, has the following merit: 1, the bit are dismantable -like, after wearing, removable 2, the bit use the exotic material and the craft manufacture, the wearability, the life are long. 3, the unique structural design, because of twines not easily halts. 4, the production efficiency is high, the smashing effect is good.