Speedbonder™ H4500 Structural Adhesive, Two-Part, Dual Cartridge, 678 g., GreySpecially formulated to provide tough, long lasting bonds to metal surfaces, such as steel galvanized steel, aluminum, sheet metal and stainless steel Capable of reducing or replacing the need for threaded fasteners, welds or rivets, resulting in a higher quality assembly High strength structural adhesive for metals Fast fixture metal bonder Chemistry: Two part acrylic Low viscosity: 45 000 cP Mix Ratio: 10: 1 Cure speed: Fixture 15 min., full 24 hrs.