Jevvu Thread Lock Blue and Red, 50mlx2 Thread Locker Medium and High Strength, Lock Tight Threadlock for Nuts, Bolts, Fasteners and Metals, Against Losening and Leakage

This Thread Lock Blue and Red set is an absolute game-changer for anyone working with nuts, bolts, and fasteners! I've used various threadlockers over the years, and this 50ml x 2 combo of medium (blue) and high (red) strength is incredibly convenient and effective. The blue provides a reliable hold for parts I might need to disassemble later, preventing loosening from vibration without making removal impossible. The red, on the other hand, gives me rock-solid assurance on critical fasteners where I absolutely cannot afford any loosening or leakage. Both formulas apply smoothly, cure consistently, and truly deliver on their promise of locking components in place. I've used them on everything from engine components to outdoor equipment, and they have performed flawlessly, resisting both loosening and leaks under various conditions. The generous bottle size means these will last through many projects. This is a must-have for peace of mind and the longevity of your assemblies. Highly recommended for professionals and DIY enthusiasts alike!

This is really nice to buy the red and blue together in 1 package. It works and I have used it many times on different projects.

I used the blue, working great I had to put it on some bolts on an old 2013 Troy Bilt lawnmower. It runs a little shaky and it's half plastic. I've mowed with it a few times and everything is still there.

I’ve had a nut that has come loose for years on my equipment cart. Not anymore —this has held steady for months.

I love working with a big bottle than a little bottle. The tip is awesome with its push in and pull out to dispense.

I’ve been using both the Jevvu 242 (Removable) and Jevvu 271 (Permanent) thread lockers for a few weeks now, and I’m very impressed with their performance. Perfect for projects where you may need to disassemble parts later. I used it on my mountain bike components and small engine parts. It holds everything snugly, but with a bit of effort, I can still remove the bolts when needed. The red one really locks things down. I used it on a lawn mower blade bolt that kept working loose, and it’s held rock-solid ever since. Just be aware that removal might require heat or extra tools—so use it only where you’re sure disassembly won’t be needed.

Nice size for the price. Does exactly what its supposed to do! Makes a great seal. Pleased with this item.

Really works to prevent my headphone earpieces from unscrewing from the head strap. those little screws kept unscrewing themselves! I tried another off brand blue 243 locker and it didn't work very well. This one works a lot better. It's also really helpful to be able to choose between the blue and the more permanent (-ish) red. Definitely recommend this!