The CRL Crystalene Ultra Low Viscosity Crack Repair Resin is used for repairing cracks emanating from breaks because it flows more easily into cracks than low or medium viscosity resins. It's generally too thin for other types of breaks, but is the answer for fixing most cracks.

The CRL Crystalene resins are specially formulated using no cancer causing or skin irritating chemicals (ref. California Prop 65). CRL Crystalene resins are acid free, have no odor (low VOC's), are strong, optically clear, and will not yellow.