WS3000 Slotted Abrasive Kit for Slotted Edge-Vision Wheel Includes (6) total 150mm discs. (1) P80, (2) P400, (2) P1200, (1) 6000 grit Micro Mesh. Work Sharp abrasives are formulated, designed, and made in America by industry-leading abrasives manufacturer Norton for precision sharpening of high-strength steels. The grit symmetry, spacing, and backing flexibility are all designed to produce the optimal edge with minimal heating or material takeoff. Edge-Vision Wheel and Abrasives allow you to see through the sharpening surface and sharpen on the under side of the wheel for precision sharpening of curved wood tools like lathe tools.