Consew 2230R Knee Lifter from the parts book which includes;
11-01 Knee Lifter Pad
11-12 Screw for Knee-Lifter Pad
11-5 Knee-Lifter Pad Rod
11-14 Knee Rubber Pad
The knee lifter on a sewing machine enables the user to raise and lower the presser foot while keeping both hands on the fabric during the sewing process. The knee lifter is placed on the side of the machine and is triggered by pressing on it with your knee. This part will instantly improve the precision and speed of your projects. It also eliminates the need to use your hand to raise the presser foot while guiding the fabric with the other hand, you can just do it with the knee lifter instead. Using your knee to do this will give your hands a break and increase efficiency.