1. Piping foot for sewing machine. Pressing line width: 1 cm/0.39 inches, width is suggested to be 0 with length at 1-3. Be sure to use the straight in the center position, otherwise, you will break your needle. 2. This sewing machine feet will do either single or double piping. Piping presser foot with 2 grooved holes,make sure that the biggest thread/rope diameter under the grooved hole is within 5mm. 3. The piping foot for sewing machine is used to insert packaged piping into seams and edges for a tailored . A single layer of fabric can be pleated, or a double layer of fabric can achieve the perfect pleated effect. (The upper fabric is flat and the lower fabric is pleated and hemmed.) 4. The piping sewing machine presser foot will fit high speed 1-needle lockstitch industrial sewing machine. Please make sure the presser foot screw on your sewing machine is adjustable. Colour:Silver Material:Metal Package Contents: 2 * Presser Foot 1 * screwdriver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.