A Crystal Roller is a Shiira tank.
In general it looks like a normal tank as the base design was taken from human tanks. though subtle design traits the main way to know its a Shiira tank is cause as with all Shiira tech, its all made from crystals.
-Its a 2 man vehicle:
--a Shiira heavy specialist is needed to move the tank and for none-ellectrose weapons in certain cases.
--a Shiira weapon specialist to handle all ellectrose weapons and in general all none-ellectrose weapons as well.
-they are equipped with ellectrose Core crystal for the ellectrose weapons.
-slow but very sturdy.
-4 types can be found.
weapons and defenses: (basic version)
-Ellectrose bomb as main cannon weapon.
-crystal Gattler: ellectrose version.
-diamond quartz armoring.
Weapons and defenses: (heavy version)
-Hellio tracking shard frontal system
-hallio tracking shard defensive system
-Diamond quartz armoring double layer.
-Crystal Gattler: crystal version
Weapons and defenses: (light version)
-Crystal gattler: Ellectrose version
-Diamond quartz armoring
Weapons and defenses: (free version)
-Twin spire launcers (tank sized version)
-diamond quartz armoring
-Crystal gatller crystal version
(its called a free version due to being free of ellectrose systems and thus free from EMP blasts)
see also: List of Shiira tech