Jaguar Roller Foot.
The Roller Foot is designed to feed slippery fabrics such as silk, leather and velvet. The textured rollers on the foot provide pressure for fabrics between foot and feed dogs so that users can sew various slippery fabrics easily and smoothly. The Roller Foot is commonly used with a straight stitch or zig zag stitch. It can also be used with other utility and decorative stitches.