The Hose Crimper Die OD 640 to 671 from Fittings Unlimited Inc is essential for creating secure hose connections. This die is designed for use with crimping machines, providing precise crimping for hoses with an outer diameter ranging from 640 to 671. Its robust construction ensures durability and consistent performance, making it ideal for high-pressure applications. The die is compatible with various hose types, ensuring versatility in use. This tool is a must-have for professionals looking to achieve reliable and leak-free hose assemblies.