Bernette B38, 394-Stitch Computer Sewing Machine, 8 Buttonholes, 3 Fonts, Threader, Thread Trimmers, Hard Case, Extension Table

AUTOMATIC LIMITATION FOR DOUBLE NEEDLES When you change from a single to a double needle, the "double needle button" will help you adapt your needle to the presser foot so that neither needle will inadvertently hit the presser foot and break off. The "double needle safety" function limits the stitch width so that the needle doesn't hit the presser foot.