Each RC BOMBSHELL is backed with a special Rhino-lining that prolongs the life of each shell, reportedly up to 3 times longer. It has a textured mat black finish which looks very clean and sharp, as well as protects the paint from being scratched on the inside. It is not affected by nitro fuel or being scrubbed with a brush on the inside. Every customer has loved the lining and is just as excited to show people the inside of their RC BOMBSHELL as the out.