Learn to Build the “Quad” Climbing Anchor

The “quad” offers a strong, fast, redundant, simple anchor when distributing forces between pieces is a high priority. Note that the quad will extend slightly should either side fail, making it best suited for routes with modern, two-bolt belays and/or ice routes when using two screws at a stance. The quad also works well on multi-piece gear anchors, though it requires more consideration...

Huh. Not sure why I never thought of this kind of anchor when I was climbing a lot. Be sure to check out the 3 piece quad anchor this article talks about at the end.

Learn This: Build a Quad Anchor