The left branch is thicker which makes it possible to make stitching ribs and hems up to 1 mm. This foot having a special coating in terms of its sole, you can now work very restrictive materials at the level of the Training, such as leather, foam, vinyl, Swedes and waterproof materials. This feet adapts to industrial sewing machines with bottom training (Juki, Janome, Pfaff, Barkopp, Siruba, TEXI).