The Urethane Fast Cure Crack Filler Concrete Repair Kit is a two-part, high-penetration, fast-setting, hybrid polyurea designed for repairing and rebuilding damaged concrete. This product boasts a 1:1 ratio, making it an easy-to-mix system with 98% solids and VOC compliance. It is versatile and suitable for various applications such as setting anchor bolts, repairing damaged control joints, addressing spalling, and reconstructing vertical curbing and steps. Additionally, it allows for adding sand or gravel to extend the material's volume, serving as filler for repairing large spalls, holes, and cracks.