The Rhino Carbon Fiber Concrete Crack Lock stitch (CCL) is a revolutionary new product that was developed to improve concrete crack repair. CCL is installed by making a single cut across the crack and drilling two holes along the cut at the appropriate locations. Once the preparation is complete and free of dust, the cut is filled with RCF High Strength Anchoring Epoxy Paste, the CCL is inserted, and more Anchoring Epoxy covers the stitch. Once installed, the CCL bonds both sides of the crack together. Due to the unique shape of the CCL, it utilizes the complete tensile strength of the carbon fiber instead of just the epoxy bond.