Top Flite Microballoons Filler, 8-Ounce FEATURES: Ultra-light extender makes epoxy or polyester resins lighter and more sandable; Great for joints and fillets, or surfacing over imperfection INCLUDES:Fluid Ounces: 8oz (237ml) ; Net Weight: .71oz (approx) REQUIRES: Safety goggles and gloves should be worn when handling micro-balloon