NOTE: Zauberzeug Fiber & Yarn no longer carries stainless steel fiber. Stainless steel fiber is now available in a variety of weights at many retailers, some of which have even used the exact product description I wrote for my original Etsy listing!
Additionally, I have noticed some debate surrounding the "original" source of stainless steel fiber. Fine metal fiber (including stainless steel fiber in particular) has been around for many years and was originally developed for use in industrial filters. Though I do not know who was the very first seller to market this fiber to a retail audience, I first noticed stainless steel fiber for sale at SparkFun around 2011 -- as of December 2015 (or earlier), they have retired it from their catalog.
This combed fiber top/roving is real, 100% stainless steel, only 3 microns in diameter with a staple length of 5-6cm (2-2.5 inches), perfect for blending with your favorite fibers to create conductive yarn or felt! As this fiber is real metal, it will add a bit of glimmer to any blend. This is the finest stainless steel spinning fiber available -- it looks, feels, and drapes like silk.