The swiveling, single fold binder is a tool that can be mounted on the sewing machine next to the stitch plate. The binding tape is folded into a U-shape toward the presser foot as the fabric is sewn and is additionally guided during sewing. It is only suitable for a fixed size of binding tape! The Binder can be swivelled to the side when not in use by means of a swivel arm. This allows other sewing work to be carried out without having to dismantle the Binder. It is mainly used on industrial sewing machines, as it cannot be mounted on most household sewing machines due to space restrictions.
Source:
Tacticaltrim Trading GmbH