Niche links aka curated links are the most powerful links currently available, they are links on existing pieces of relevant content on real websites that are already indexed and aged by Google, a lot of posts are many years old carrying true trust and authority.
100%, natural and genuine whitehat outreach
A link placed on a 100% real website, owned by a real person, writing REAL content
A site with a minimum of RD100+
A contextual DOFOLLOW link
A link on a page or post that is RELEVANT to your niche!