Ideal for repairs with Liquid Leather. How to use: At first open the lid and press the felt-tip repeatedly until it is moist. If the felt-tip is too wet, remove the surplus with a cloth. Then lightly dissolve the used Filler or Liquid Leather superficially and smoothen it. Alternatively, the repaired area can be treated with the Sanding Pad after using the GLD – Pen. A leather grain can only be put in with a repair grain. Always work carefully. If the treated area is too wet, it becomes blurred. In case the felt-tip is dirty in can be pulled out and put back in reversely. This is especially necessary if the color is about to be changed.