Baby Lock Single Fold Bias Binder with Rake 32mmBaby Lock 32mm Single Fold Bias Binder with Rake.(D13_3_12E). The single fold bias binder is a quick and precise solution when you want to bind fabric edges or necklines with a bias tape using the cover stitch or double chain stitch. The upper side of the bias tape is folded and the reverse is single layer thus reducing bulk. Inlet 32mm outlet 12mm. Compatible machines: Ovation Triumph Gloria Cover Stitch Euphoria