Peachtree Woodworking Supply Coarse Glass Plate Sharpening Kit Kit Includes; 12" x 12" x 3/16" thick square glass plate, 1 honing guide, 1 12"x12" black grip mat Also 2 each 220x, 320x, 400x, & 600x - 4 1/2" x 11 silicone carbide - wet/dry sticky back sandpaper Use the Course Glass Plate Sharpening System for removing nick and gouges