The 12BST Hollow Hex Plug from Fittings Unlimited Inc is designed for reliable sealing in various applications. This hollow hex plug features a 12mm size, ensuring compatibility with standard fittings. Constructed from high-quality materials, it offers durability and resistance to corrosion. Ideal for use in plumbing and hydraulic systems, this plug meets industry standards for performance and safety. Its hexagonal shape allows for easy installation and removal using standard tools, making it a practical choice for both professionals and DIY enthusiasts.