The size of the shredder for a Massey Ferguson 230 tractor depends on the type of shredding application you have in mind. If you will be shredding hay, then a shredder with a 3-point hitch should suffice. However, if you intend to shred other materials such as brush or stumps, then you may need to invest in a larger shredder with a Category 1 or Category 2 3-point hitch. You should consult a tractor expert to make sure you purchase the proper size shredder for your Massey Ferguson 230.