Citadel Synthetic Base Brush (X-Large)Some days you just have to lay down paint on a big chunky boy like the Reaver Battle Titan, and even a dependable L Base brush isn't going to cut it for long. Instead, take a firm hold of the XL Base brush and begin to wonder how it took you so long to paint big models in the first place. As a Citadel STC brush, the bristles have been made out of the finest 100% synthetic fibres Games Workshop have ever produced, helping to maintain the ideal brush