So i have this for just about 3 years and I am lucky if I used it monthly. The machine has been difficult asi could not get the thread to wind tightly. It just seemed to be a hassle switching it from bobbin to bobbin till it's tight and even. We'll now the tension part has completely brocken and I cannot use it at all. And went to re order a new one and came across the amount on this 1 at 155 +$ when i originally paid 20 I will just use the one on my sewing machine now. I do not recommend this product from this seller....