EMI has recognized the need for a versatile yet convenient multi-fire / rescue tool. The results - The 511 Tool™. Capable of five different functions; Adjustable hydrant wrench, spanner wrench, gas shut-off tool, pry axe head, striking hammer head, this tool is essential gear for all firefighters and emergency responders. The 511 Tool™ is manufactured of high strength treated alloy. It is also non-sparking, corrosion resistant, light weight and can be worn easily on a utility belt.