- VERSATILE COMPATIBILITY: This tool is designed to fit a range of cylinder regulator wrenches, featuring built-in 13mm, 17mm, and 19mm wrenches. Ideal for home kitchens, camping BBQs, and various outdoor activities. - MULTI-SCENARIO USE: The armored key is perfect for securing tents and making minor bicycle repairs. Whether you're hiking or enjoying a camping trip, this tool is essential for handling a variety of outdoor tasks. - ROBUST CONSTRUCTION: Crafted from durable materials, this tool is resistant to high temperatures. Its sturdy design ensures long-lasting performance, while the smooth exterior allows for easy cleaning and maintenance. - EASY TO USE: The user-friendly design of our armored wrenches allows for quick and efficient operation. Simply place it over the regulation button and turn. Eliminate complicated maintenance procedures and save time and effort with this convenient tool. With its strong compatibility and practical applications, this tool is a reliable choice for all your repair needs.