... and watercolor brush1)About quality of products : Aluminum ferrule , through the oxidation technology production, no rust, no scar . Paint is environmental ... shipping .4)Packing : With six wear cardboard, into the opp bag. Then put in the box, 50 sets of/box or Plastic packaging ... you samples. New clients are expected to pay for the courier cost, the samples are free for you, this charge will be ...