Def Lock, or Defense Lock, sometimes known as Iron Skin, is one of the many recurring Skill Trees in the Monster Hunter series. This Skill Tree first appeared in Monster Hunter Portable 3rd.
Def Lock has appeared in the following games:
|Skill Tree||Skill Name||Points||Skill Description|
| Iron Skin|
|+10||Negates the effects of Defense Down.|
MH3U Equipment with Def Lock