The Roller Foot is designed to feed slippery fabrics such as silk, leather and velvet. The textured rollers on the foot provide pressure, so that users can sew 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. F066. Compatible with the Innov-is 400/600, DS-120/140, RL/RH/XQ/XN series.