This expansion rubber well nut is designed for a variety of applications, measuring 0.829 inches in overall length and requiring a 1/2-inch diameter hole for installation. Made from durable neoprene, it features a captive brass nut molded directly into the rubber, with a thread size of 1/4-20. As you tighten the nut, it expands securely in place, providing a reliable and snug fit. Its construction ensures resistance to ozone and chemicals, making it ideal for environments where durability and longevity are essential. Backed by Metro Moulded Parts' reputation for quality, this well nut is perfect for securing components in a range of settings. Covered by a 90-day warranty, it offers peace of mind with a no-hassle replacement guarantee. Features and Benefits Expands as tightened for a secure fit. Resistant to ozone and chemicals for long-lasting performance. Made of neoprene with a brass nut for durability. Easy installation with a 1/2-inch hole requirement. Warranty InfoMetro leading warranty is the best in the industy. This part carries our standard warranty and is guaranteed for a full 90 days from date of purchase. We promise that if your Metro part fails during this time we will replace it free of charge. That is our "No Hassle" guarantee. Do not settle for a simple promise of satisfaction.