4?Armor Hardener Included:

Radioisotope EM Hardener I (EM Dmg Resistance Bonus 50%)

Radioisotope Explosive Hardener I (Explosive Dmg Resistance Bonus 50%)

Radioisotope Kinetic Hardener I? (Kinetic Dmg Resistance Bonus 50%)

Radioisotope Thermic Hardener I (Thermal Dmg Resistance Bonus 50%)