Crafted from heavy-duty forged steel, this box tank wrench is specifically designed for use with B and MC acetylene valves, ensuring a secure fit and reliable performance. With two openings and a compact length of 3-1/8 inches, it provides the necessary leverage and control needed for safely handling acetylene tanks. The 3/16 inch opening size makes it an essential tool for professionals and DIY enthusiasts alike, offering durability and ease of use in various applications. Whether you're in a workshop or on-site, this wrench is an indispensable accessory for your toolkit.