The BERNINA #C22 Single-Fold Binder Attachment is used with the Binder Accessory Attachment (required). With the single-fold binder, fabric edges and necklines can be perfectly bound with tape. The unfolded tape is inserted through the guide rail and folded under on the upper side. The lower side is neatened with the chain looper thread. For the personal, customized look, the tape can also be self-made and cut. Tapes of 40 mm width result in a binding of approximately 10 mm.. An accessories holder is required to attach the binder. Compatible with L 890.