Citadel Colour spray cans are designed for undercoating metal and plastic models. The purpose of the undercoat is twofold: it acts as a primer and it provides a flat base colour to paint onto. You will find that a spray finish is far flatter and better to paint onto than a brushed undercoat.
This can contains 400ml of black undercoat.
The Citadel Chaos Black Paint was built with people like you in mind. Something to keep you happy. Every. Single. Day.