Fumed Silica Thickener (705) is an inert extra-fine powder used to thicken and add viscosity to epoxy resin-based products. It is most often used with inexpensive 100% solids resin to create a patching compound.
Wax Grip Additive (409EZ) is used to maximize the anti-skid properties of epoxy floor coatings. The particle size produces a uniform, textured surface. The spherical shape allows it to feel smoother than other additives of this nature.