Aerodur 3001 Special Effects topcoat is part of the high solid 3 components polyurethane Aerodur 3001 Solid Colors – Aerodur 3001 Special Effects – Aerodur 3002 Clear Coat system for exterior usage. This system provides uniform coverage and appearance in one box coat application for most of the colors and effects. When used with the specified polyurethane clear top coat (Aerodur 3002) this system provides a durable long lasting, protective and decorative finish that exceeds typical OEM requirements for exterior aircraft performance.