Brother ST4031HD Strong Tough Freearm Serger (PS3734T 1034D+T) 1234 PreThreaded, Ext Table, 3 Feet Reg, Blindhem, Gather. Roll Hem, Diff Feed, 1300SPM

Convenient stitch width control Simply turn the stitch width adjustment dial to change your stitch width between 5.0mm (3/16 inch) and 7.0mm (9/32 inch). Adjusting the stitch width allows you to create serged seam finishes that lie flat, especially on lightweight fabrics.