Welcome to the store! 1、The twin needles of these machines are made of stainless steel and plastic, sturdy and durable, and have a long service life. 2、The twin needle comes with a durable small plastic box that allows you to easily collect and store. 3、With this product, you can sew 2 identical needles at the same time, the most common is 2 parallel straight needles. 4、A sewing machine that supports twin needles can also be used for other pattern stitches and can use 2 different colors of upper thread. 5、These twin needles are good accessories for sewing machines and are compatible with most multi-functional sewing machines. Item Type: Sewing Machine Double Needles Product Specifications: 1 x 2/90 1 x 3/90 1 x 4/90 1 x 2/80 1 x 3/80 1 x 4/80 1 x 2/75 1 x 3/75 1 x 4/75 1 x 3/2/90 (2.5/90) Product Material: Stainless Steel, Plastic Product Use: Household Size: Approx. 38mm / 1.5in 10 x Double Needles Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!