410 Microlight™ is the ideal low-density filler for creating a light,
easily-worked fairing compound especially suited for fairing large
areas. Microlight mixes with greater ease than 407 Low-Density filler or
microballoons and is approximately 30% easier to sand. It feathers to a
fine edge and is also more economical for large fairing jobs. Not
recommended under dark paint or other surfaces subject to high
temperatures. Cures to a tan color.