Husqvarna Viking Metal Invisible Zipper Foot for Groups 1‚ 2‚ 3‚ 4‚ 5‚ 6‚ 7‚ 8‚ 9 (920458096)Husqvarna Viking Metal Invisible Zipper Foot (920458096) Compatible machine groups: 1 2 3 4 5 6 7 8 9 This foot has all the benefits of the clear plastic version but with the strength and stability of a metal foot Improved grooves to guide your zipper in place. Invisible Zippers (sometimes called concealed zippers) are most often seen in the centre back of a dress in the side or back of trousers and skirts and in some home dec projects. As the name