Check the listing for details. Polygem LCR Corner Injection Ports - Concrete Repair Kits DIY Foundation Repair. Color: Clear, Condition: New. Listed at 21.25 USD. Polygem LCR Corner Injection Ports - Concrete Repair Kits DIY Foundation Repair Pack of 7 Corner Ports specifically designed for LCR Injection Epoxy installation in corner locations.Affix to surface of crack to provide for injection of LCR Epoxy - designed especially for cornersUse LCR Epoxy Repair Paste to secure the port to the surface of the crackThe base of each port has tabs that can be bent to fit the corner locationUse LCR Epoxy Repair Paste to hold securely against the surface until curedWhen mounting, take care not to block the hole at the port's base where it straddles the wall crackHint: Use a finishing nail or wire inserted into the crack inside the port to ensure the crack is not covered and holding the port in place while epoxy paste curesFollow all directions carefully, including cure time for Epoxy Repair Paste (12-24 hours) before injection of liquid epoxyA Polygem LCR exclusive product, but may be used with other systemsUpon completion of the project, ports can be removed by striking with hammerAlways use eye and hand protection while mixing Epoxy Repair Paste and injecting LCR Injection Epoxy