The 3/64" diameter braided stainless steel cable used in the Arakawa Hanging system is used, primarily, when you hang items from the CRE series of wall-mounted, aluminum hanging rails. It can, also, be used with ceiling-mounted hanging hardware. Once you determine which length of cable you need, you can order it cut to that size. We offer 9 different lengths, but you are free to contact us for a custom size. It will cost the same as the next closest length longer. For example, if you need 30 inch cables, it will cost the same as a 36" cable. However, you only really need to order precise lengths if you are working with cables that have tensioners on the bottom end of the cable, pulling it taught.