This double fold bias binder will turn fabric strips into binding and attach it to project edges all in one step. This attachment is perfect for curved edges, collars, and necklines on knit or woven fabrics. Use with the Overlock Table (BLA-OLT) or Alternate Table (BLES8-CST) for with the Baby Lock Ovation or Triumph sergers. Fits Models: BLETS8AE BLETS8 BLES8 BLCS-2 BLCS BLC4 BLP6