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Threadlocker Blue 242 locks threaded metal fasteners against vibration loosening. Metal parts are removable with hand tools for easy disassembly. Prevents leaks and rusting of threads for 1/4-inch to 3/4-inch (6mm to 20mm) nuts and bolts.Sets in 10 minutes; cures in 24 hours. Useful for small motors, mowers, and power equipment.