KustomShop Pinstripe/Pinstriping BRUSH PRESERVING OIL Kustom Shop KB211 Brush Preserving Oil was developed to protect and condition your Striping and Lettering brushes KB211 restores the natural oil to the hair of the brush and keeps brushes soft and allows shape to be maintained Helps to prevents paint build up on the heel of brushes Brush Preserving Oil is available in convenient four ounce Bottles.