GP-WIZ Glass Scratch Restoration System use 4 step sanding process depending on the depth of the scratched glass. The discs are color coated based on aggression.
GP-PRO175 Red - EXTRA COARSE ideal for grinder and welder splatter damage removal.
GP-PRO150 Red - COARSE ideal for heavy damage removal (graffiti etching, acid etching, heavy scratches).
GP-PRO100 Green - MEDIUM ideal for deep damage removal ( sandpaper damage, razor blade or windows cleaner damage).
GP-PRO50 Blue - FINE Pre-polish disc ideal for removing abrasive marks left by GP100, for hard water stain, lime scale or for light scratches removal.
In order to achieve effective results you must progress down through the stages uniformly from whatever stage or color is initially used. Example: If damage is removed with the red disc you must then progress to green followed by blue and to finish with polishing process by using our Glass Polishing Compound to achieve a final result.