The JCB 41011103 is a genuine Loctite 243 medium strength threadlocker, supplied in a 250ml bottle. This blue liquid adhesive is designed for general-purpose use to prevent fasteners from loosening due to vibration and shock. It provides a reliable seal and can be used on a variety of metal surfaces, including passive substrates like stainless steel and plated surfaces. The 243 formula allows for disassembly with standard hand tools, making it suitable for applications requiring occasional removal.