Lego minifig compatible Custom SI-Dan Toys FS52 Tank Barricade. Tank Barricade for varying road-side uses. Sometimes referred to as The Czech hedgehog, is very effective in keeping light to medium tanks and vehicles from penetrating a line of defense. It maintains its function even when tipped over by a nearby explosion. Contains 15 pieces to make 5 hedgehogs, easily assembled in 3 steps.