(240 Grit) Medium Made Of A Special Cloth And Fiber With A Ratio Of 1:1. Designed Especially For Use With Gold.Silver.Platinum.Stainless Steel. Polyester. for efficient shaping, smoothing and texturing of workpieces. features evenly spaced flaps of aluminum oxide-coated emery cloth Size 4" X 5/8" (100X15X8mm).