A square pad is made of strips of the same width abrasive cloth wound around each other to a desired thickness and bound by a threaded hub. They are used for light metal removal and even finishing on irregular contours of forging dies, Kirksite dies, and similar jobs. Click for Product Info on Mandrels for Square Pads Square Pads   Sizes     Width: 1-1/2", 2", 2-1/2", 3", 3-1/2" or 4"     Thickness: 1/4", 3/8" or 1/2"     Eyelet: 8-32 thread, 1/4-20 thread   Material Specifications:     X-weight Aluminum Oxide Resin Bond Cloth     Other materials available on request   Grits available:     400, 320, 240, 220, 180, 150, 120, 100, 80, 60, 50, 40, 36.