Nano is an ultrafine surface--smoother than a baby's butt. It takes compounds extremely well and is extremely thin, minimizing inadvertent edge convexing. It doesn't add any, abrasion on its own, letting the compounds shine through. It also has a nice consistent draw.
Ken's Nano Cloth strop has a magnetic strip on the back of the glass so it works on our black metal base. Measures 3"x8”