After Rock Chip Repair Resin has been injected and cured in a repair, you're left with a small surface “pit.” Pit Filler works with a Film Tab to fill the pit, creating a smooth and seamless finish. GlasWeld Pit Filler is clear with a medium viscosity and superior adhesion and strength. Note: Photos are intended for illustration purpose only. Exact products may vary due to product enhancements and updates. Pit Filler is used at the end of the windshield repair process. To use, apply a small drop on the repair, layer a Film Tab on tap, and cure using the ProCur+.