As an Industrial and Scientific professional, I was looking for reliable compression springs for my latest project. My analysis of these springs showed that they were sturdy and accurate, offering great resistance to pressure and deformation. The best feature of these springs, in my opinion, is their ability to maintain their shape over long periods of time, which is very important when it comes to power transmission products. There is only one downside that I found, which is the difficulty to install them in some applications. Other than that, I would highly recommend these compression springs to anyone in need of a durable and efficient product.