These microfiber cloths are perfect for cleaning a wide range of surfaces without the need for detergents. The cloths work best dry or slightly damp and will bring back the shine of your stainless steel coffee equipment. These cloths will certainly not leave any watermarks behind. This set contains 2 grey and 2 black cloths. The two colors help assign a particular task to color, particularly differentiating a milk cloth from a regular counter or machine cloth.