Jf4top 180 grit 610mm x 40mm is a very flexible high purity aluminium oxide abrasive material with additional grinding aids in the top coating. JF4top has a great belt life when finishing and polishing of anything from stainless steel to brass. for finer grinding
We particularly recommend JF4top for flexible belt applications (such as the Finitube or Beltit powerfiles) on stainless steel and non-ferrous metals.