System Three 3145S16 White Glass Microspheres, 1 Quart Tub

System Three Epoxy Glass Microshperes are hollow, clear, microscopic spheres are bulking agents that make a low cost, low density filler. Added to epoxy resin and hardener mix (sold separately), they make a good, heat-resistant, light-weight fairing compound with good compressive strength. Mixture can be blended with a small amount of Silica Thickener to prevent sagging. Not recommended for glue. Alternatively use SilverTip QuikFair for ease-of-use. Quart container. USA