Diamond Dot Electroplated Abrasives Magentic Disc are precision abrasives products,This product is a thin solid sheet of springy metal, with dots of diamond abrasive electroplated directly to the base sheet.We use 100% diamonds electroplated onto the surface with nickel. This creates a highly durable, rust free disk for all your grinding needs. The back of the disk has a rubberized magnetic applied to it which allows for easy application to the metal wheel head of your grinder.This magnetic system makes changing from one grit to the next extremely easy. Our Diamond dots cannot pull up or fall off to create bare sections or cause cutting or gouging of the material. The thin metal backing helps the abrasive lay flat and produces a even sharp facet or bevel when required and prevents uncontrolled scratching of the finished surface around the area to be worked.Diamond Disk only 1.7mm thickness with magnetic backing, It easily rectify the distortion of disc and flat attach it to plates of grinder.