These needles are made to withstand the rigors of industrial stitching. They are the superhuman of the sewing world, easily able to handle difficult materials despite their thickness or the number of layers they contain. These needles can handle any tough material, including upholstery, canvas, and leather. System 135x17 needles are distinguished from standard needles by their sturdy construction. These needles are constructed from durable materials like hardened steel or chrome-plated steel to resist even the most demanding sewing tasks. They won't give when you apply force, so you can confidently take on thick textiles and materials. They are a dependable option for experts in a variety of fields because they are made to accommodate a variety of industrial sewing machines. Find the proper needle size and type for your Brother, Juki, or Consew machine with little effort.