About this item HIGH QUALITY: Made of high quality Aluminum/Nylon, these lock nuts are sturdy and durable, making it last longer than other Nuts on the market today GREAT TO KEEP AROUND: Hex nuts are great to have around for use in wood and wet environments, greatly reduce loosening under vibrations and torque WIDE APPLICATION: These nuts are widely used for plumbing on thread pipe and hose, they are great replacement nuts for your old or broken ones LIFETIME GUARANTEE: We are so confident that our product is the best on the market that we offer a NO HASSLE LIFETIME GUARANTEE