The XLX 200PCS Extension Compression Assortment is a must-have for anyone in the Power Transmission Products industry. Using this product, our team found that it offers a wide range of compression and extension springs, making it a versatile and reliable option for various projects. These springs are made of high-quality materials; they are durable, and remain functional even under high pressure. The only downside is that the package could be better organized to make it easier to find specific springs. Overall this Industrial and Scientific product is an excellent value for the price. .