I recently purchased a pneumatic threaded connect for my automotive welding needs. As my tests showed, this particular brand, Baomain Manifold, is the best! It has made connecting my welding tools so much easier and smoother. The design is truly thoughtful and the materials used are of high quality. The only con I could think of is that it is a bit pricier than some other brands out there. Nonetheless, it is an investment worth making if you're looking for a tool that will last long and deliver excellent results.