PC Products PC-Concrete Epoxy Adhesive Paste Kit, 50ml Cartridge and PPM-50 Dispensing Gun, 70529 Kit include gray epoxy adhesive paste, dispensing gun, and mixing nozzles to fill and repair cracks in concrete High-tack paste resists moisture for application in damp environments and can be used in vertical applications Can be used in indoor and outdoor applications with an application temperature range from 35 to 115 degrees F and a service temperature range from -20 to +115 degrees F Provides work time of 20 minutes and cure time of 4 hours (at 75 degrees F) Dispensing gun is made from steel for strength and includes a thumb-release trigger for controlled application