Special diamond grinding media for precise edge design, especially on zircon frameworks. For grinding back labial surfaces on porcelain crowns.Z-Shape No 1 Course +SKU: 9113€46.14PriceQuantity*Add to CartBuy NowTechnical infoPrecise, careful finishing of zirconia, Inceram, Spinel and Procera frameworks with low heat generation. Efficient substance reduction without micro-cracks, material discoloration or streaking. Extremely high dimensional stability. Long service life. Maximum speed range 15,000 rpm.