Straight Stitch Foot - Straight stitch foot, left needle position. Straight Stitch Foot (ESG-SSL) If you want to reduce puckering on lightweight fabrics and prevent delicate fabrics from "jumping" and shifting, this foot is for you. The small opening on the foot provides support as the needle travels through the fabric, preventing flagging. The center needle position leaves no guesswork. Fits ESG, ESE, ESL, ESP, ESI, ESN.