DiamondClear Pit Filler PFAF - 15cc Formulated to have the same refractive index as the glass which adds a clear look to the surface of the windshield once the pit filler has been cured. Great as a final capping resin for any windshield repair break once the cracks have been filled. Diamond Clear Resins are the industry standard for windshield repair bonding. UV inhibitors that prevent yellowing from occurring over time. Medium viscosity Pit Filler is used for filling small surface pits. BSI tested for quality. 15cc bottle produces approximately 100 windshield repairs.