SADDLE STAPLED / SADDLE STITCH STAPLED

A method of binding booklets, magazines, or pamphlets by folding wraps and leaves into a single gather and stapling through the fold of the gather. The wire staples pass through all leaves and are clinched in the gutter of the central leaf. 

Saddle stapling can be impermanent, as repeated handling can pull the staples through the wraps and unplated staples can rust.

The first image shows two staples through the spine of a small booklet. The second image shows the staples clinched in the gutter of the central leaf.