• You can easily fill and clean the dented cracked blackened ceramic spaces in one motion without the need for a craftsman. Usage: Clean the place you will use thoroughly with a dry cloth, etc. Use the dermatic tube horizontally to the area you will apply. Open the cover of the dermatics and tighten it to the place you want to fill so that the gag tip is slightly over the area you apply with the pilastic straightening apparatus that comes to you with the dermatics and level the grouted area. Ensure that the area applied for at least 6 hours remains dry. Close the cover of the grout for reuse after use. There are 2 380 ml grouted joints in the product package.