Vallejo Metal Color Engine SetVallejo Metal Color Engine Set Four Metal Color bottles for painting radial or linear aircraft engines. The colors included in the set can be used as a base for painting most of the radial or linear engines of any period. Content: 4 x 32 ml 1. 08 fl oz Metal Color 77. 702 Duraluminium 77. 710 Copper 77. 720 Gunmetal Grey 77. 723 Exhaust Manifold Metal Color is the innovative range of metallic colors with a water based formulation, which uses aluminium