Warriors of the legions use heraldry markings to signify the unit specalties. here are sizes of the white Skull with Charcoal Grey Crown of Thorns chapter markings for Kneepads, Shoulder pads / pauldrons, Banners and vehicles. The decal is printed in white on clear decal film. These waterslide decals are compatable with Warhammer 40k and Infinity miniature games.