Compared to the standard Mark Fit (Item 87102), this “strong” version has a more powerful formula for softening decals. It will help decals adhere and conform to difficult curved surfaces or matte-painted surfaces. In addition, it could also help speed up the decal application process. Bottle cap comes with brush applicator. Bottle contains 40ml. May cause damage to painted surface in some cases, particularly surfaces painted with acrylic paints