3M's 675L Electrostatic Diamod Disks with Velcro Backing work well as a pre-polishing step on 4 Inch Velcro Backer Pads for right angle grinders. The Electrostatic diamond surface gives a fantastic finish on your glass to polish from. These disks will wear quickly so we recommned getting mulitples.
Works well Review by Josh
These gave me a nice pre polish (Posted on 11/2/2016)
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