These interchangeable cords can be added to interchangeable needle tips to increase workspace on larger projects. Made of stainless steel, they lay flat and uncoil easily. Each pack contains 2 cords, 2 wooden end caps and 1 tightening tool. Available in the following lengths: 8" to make 16" with 4" tip 13" to make 20" with 4" tip 14" to make 24" 22" to make 32" 30" to make 40" 37" to make 47" 49" to make 60"