Upper & Lower Knives---Upper Knife Size(L x W) 4 x 0.6cm / 1.57 x 0.24in, Lower Knife Size(L x W) 2.5 x 0.6cm / 0.98 x 0.24in. A good sewing machine accessories to make your work more efficient.
Excellent Workmanship---High-quality steel makes it strong and durable, and has a long service life. Corrosion resistance, smooth and without burrs, high strength and durability.
Replacement Accessories---Easy to install and easy to use, replacement for the old or the bad.
Quality Guarantee---We supply 1 year warranty, 30 days money back, 7x24 hours email support. If you have any problem, please don't hesitate to us, we will try our best to solve it for you.