Yeamon pairs a stainless gua sha with a matching steel roller, so you get the long cold-hold of metal across both tools — the spec that actually separates steel from stone. Owner reviews are notably high, and the set covers both contour scraping and rolling drainage. It's heavier than stone and needs drying to avoid spotting, but for steel at a fair price it's a sensible pick. Depuffing is temporary regardless of the tool.