MIRKA new mini ceramic grinding discs are manufactured with a high-quality grain with a finer crystalline structure. Such a unique mineral fracture provides the abrasive grains with an improved self-sharpening effect. The new discs are only available in the "TR" Roloc style.
MIRKA Ultra X Mini Grinding Disc, 3 in Diameter, P50 Grit, Aluminum Oxide/Ceramic Abrasive, Resin Fiber Backing, Type TR Attachment, Dark Red, Performance Tier: Better