for example:
jitl:twilight_chestplate and helmet, leggings, boots.
jitl:flame_chestplate and helmet, leggings, boots.
jitl:hollow_chestplate and helmet, leggings, boots.
jitl:crystal_flake_chestplate and helmet, leggings, boots.
jitl:frost_bitten_chestplate and helmet, leggings, boots.
jitl:hellmetal_helmet
it crashed when put it on anvil with enchanted books.

1.20.1-forge47.2.32
JITL - 2.1.5 - 1.20.1.jar