Med. Weight #4 Yardage
(other manufacturers call this a #3 Invisible or Concealed Zipper) Stocked as yardage, 10" & 20" finished zippers (I'm working on getting them into my cart), separating zippers in limited colors & lengths. #4 invisible zippers work in bridal, pillows, and medium weight fabrics. Since the coil is larger than the old #2, the invisible zipper foot you use for the #2 dress weight zippers, gets too close to the coil & can cause the zipper to pop.