Used for deburring cylinder walls and holes. Two-discs-per-set polish on inward motion only. Four disc per set polish on both inward and outward motion. Overlap Slotted Discs Click for Product Info on mandrels for overlap slotted discs Overlap Slotted Discs Sizes   Diameters:     1", 1-1/4", 1-1/2", 2", 2-1/2", 3"   Discs per Set:     2 or 4   Eyelet:     3-48, 8-32, or 1/4-20 thread Material Specifications:   X-weight Aluminum Oxide Resin Bond Cloth   Grits available:     400, 320, 240, 220, 180, 150, 120, 100, 80, 60, 50, 40, 36   Other materials available on request