Bastions can take the form of anything from reinforced ferrocrete bunkers to pyramidal tombs made of living metal. Bastions are typically resilient enough to withstand an orbital bombardment, and often form the cornerstone of a planet's defence network. This set contains one plastic Imperial bastion and two plastic Chaos Tank Accessory frames. An Imperial Bastion is an 85-piece set that includes an Icarus-pattern lascannon and additional components for personalising the bastion. A Chaos Tank Accessory frame is a 28-piece set that includes a range of chains, Chaos icons, skulls, spikes and hooks.