20-150 is a 2K polyester fiber gel putty. For filling rusted areas. Fibergel can be used directly on iron, steel, aluminum, and zinc-coated surfaces. Leaves finer transitions compared to regular fiberglass putty.
This putty compound is extremely homogeneous and super easy to sand, even after 24 hours.
Note that this putty is two-component and must be mixed with hardener in a ratio of 100:2-3. Hardener included with purchase.
