The Closed Free Motion Spring Foot provided excellent visibility around the presser foot when you're free motion quilting or sewing. The closed round shape of this foot prevents threads or fabrics from getting stuck in the foot. The vertical and horizontal markings are great stitch guides. The spring action keeps the fabric from lifting with the needle as the stitch is being formed which helps eliminate thread breakage with specialty and heavier threads.Fit Husqvarna Viking Group 8 Models: Designer Epic 980Q ; Fit Husqvarna Viking Group 7 Models: Brilliance 75Q, Designer Brilliance 80, Designer Epic, Designer Diamond Royale, Designer Diamond deLuxe, Designer Diamond, Designer Jade 35, Designer Ruby Royale, Designer Ruby deLuxe, Designer Ruby, Designer Topaz 50, Designer Topaz 40, Designer Topaz 30, Designer Topaz 25, Designer Topaz 20, Designer SE, Designer SE Limited Edition, Designer 1, Designer 2, Quilt Designer, Quilt Designer IIFit Husqvarna Viking Group 7 Models: Sapphire 960Q, Sapphire 930, Sapphire 875Q, Sapphire 870, Sapphire 870Q, Sapphire 855, Sapphire 850, Sapphire 835, Sapphire 830, Opal 690Q, Opal 670, Opal 650, Tribute 145C ; Fit Husqvarna Viking Group 6 Models: Platinum 955 E, 950 E, Platinum Plus, Platinum 770, 775, Platinum 750 Quilt, 755 Quilt, Platinum 730, 735, Platinum 715, Rose 600, 605, Iris, Scandinavia 400, 300, 200, Interlude 445, 435, Lily 555, 550, 545, 540, 535, 530, 500, Freesia 445, 435, 425Fit Husqvarna Viking Group 6 Models: 415, 400, 350, Lisa, Angelica, Viva, Victoria, 500, Facette 500/400, Emerald, 203,183 ; Fit Husqvarna Viking Group 5 Models: Prelude 340, 360, 350, 370, Scandinavia 100, Daisy 335, 330, 325, 320, 315, 310, Oscar, Sophia, Emma, Lena, Romeo, Juliet, Anna, Sarah, 250, 230, 225/215, 210, 205, Jeans, Hugin