Teflon Coating: Made of metal and ultra-smooth Teflon coating, not easy to rust and durable. Smoother Stitching: The non-stick is designed for use on hard-to-handle fabrics, especially leather that otherwise sticks to the foot. Easy to Install and Adjust: The straight stitch snap on the foot can easily fit the sewing machine holder, you can use and adjust any pressure on the foot without using a screwdriver. Note: Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.