Multifunctional Gas Cylinder Wrench — stainless steel, 21 cm x 4 cm Key benefits Reliable tool for gas cylinder work and everyday use: designed to disassemble pressure‑reducing valves on gas cylinders and also works to open beer bottles, reducing the need for multiple tools. Secure, low-effort operation: the unique concave‑convex gear design grips the valve firmly to prevent slipping and allows smooth turning with minimal force. Durable and corrosion resistant: made from stainless steel to resist rust and maintain performance in outdoor or workshop environments. Portable and convenient: compact 21 cm x 4 cm size fits easily in a toolbox, backpack, or service bag for on‑site work. What it does and why you need it Simplifies maintenance and repairs by providing the correct fit and leverage for removing or installing pressure‑reducing valves. Reduces downtime and hand fatigue thanks to the efficient gear profile and ergonomic handling. Doubles as a bottle opener for convenience when working on jobsites, at camp, or at home. Compatibility and performance Intended for use with pressure‑reducing valves on standard gas cylinders; the gear profile offers a tight fit to common valve shapes. Stainless steel construction maintains strength and resists corrosion for long service life in varied conditions. Compact dimensions (21 cm x 4 cm) balance leverage with portability for both professional and personal use. Practical use scenarios Field service: HVAC or cylinder technicians carry it for fast regulator removal and replacement during site visits. Outdoor and camping: pack it with portable gas canisters for quick valve adjustments and use it as a bottle opener at the campsite. Home workshop: use it for occasional cylinder maintenance, hobby projects, or when you need a dependable multi‑purpose wrench. What’s included One stainless steel multifunctional gas cylinder wrench, 21 cm x 4 cm. Simple, durable, and purpose-built for valve work — a compact tool that saves time and reduces the number of specialty tools you need to carry.