JB Weld Blue Threadlocker 6mlJ-B Weld Threadlockers Provides a superior lock and seal for threaded fasteners. Ideal on all mechanical parts, body assemblies, and hundreds of other applications to prevent loosening from shock and vibration. J-B Weld Perma-lock High Strength Threadlocker is ideal for heavy-duty application requiring resistance to severe shock and vibration. Heating and hand tools are required to seperate parts.How to Use Cut -Remove required amount of putty; Mix - Thoroughly knead putty with fingers to a uniform color.; Apply - Press putty firmly to the surface to be repaired; Product Specification Metals - Metal; Other - Automotive;