CS Unitec Gas Tube Wrench, Aluminum Bronze CS Unitec Non-Sparking / Non-Magnetic Gas Tube Wrenches are a part of CS Unitecs Non-Sparking/Non-Magnetic and corrosion resistant Safety Tool Line. CS Unitec Non-Magnetic Gas Tube Wrenches are specifically designed to eliminate the risk of sparks at high-risk sites where explosive atmospheres may be present. CS Unitec Non-Sparking Gas Tube Wrenches are available in Aluminum Bronze. CS Unitec Non-Magnetic Gas Tube Wrenches are designed to loossen and remove a seized up gas tube with out crushing it. CS Unitecs Non-Sparking Gas Tube Wrenches are drop forged for the highest quality in hand tools.