The double fold binder folds upper and lower tape edge for perfect bound edge. The unfolded tape is inserted through the guide rail, folded under on either side and sewn on with a cover- or chainstitch. For the personal look, the tape can also be self-cut.
 
Tapes of 36 mm width result in a finished binding of approx. 10 mm.
An accessories holder is required to attach the binder.