The Proline Series 5/8” Compression Nut 3 Pack CP-303NLB is a set of high-quality fittings designed for use in hydraulic, pneumatic, pump, and plumbing systems. This product is specifically designed for compression nut applications, making it ideal for connecting pipes and hoses in various industrial settings. The Proline Series brand ensures reliability and durability, making this 3 pack of compression nuts a valuable addition to any business or industrial project requiring secure pipe and hose connections. Thank you for shopping with Integrity Sales. L.