503 Class Stitch

Two Thread Overedge Chainstitch Using One Needle and One Looper Thread

Typical uses; One Needle, Two Looper Overedge Stitch for Serging (Covering) Raw Edges
Thread Cross-over is on the Edge of the Fabric

Right click on the image and select "save image" to save to your local drive

Union Special 39500

503 class Blanket Stitch (Machine Crochet)