This Vintage Original Slant Needle Snap-On Foot Overedge, Straight Stitch, Zigzag is a must-have for any sewing enthusiast. It features an original Singer snap on zigzag foot, overedge foot, straight stitch foot and shank, and will fit models 401A, 403A, 500A, 503A, 600,603, 604, and many more.