CS Unitec Adjustable End Wrench, Aluminum Bronze CS Unitec Non-Sparking / Non-Magnetic Adjustable End Wrenches are a part of CS Unitecs Non-Sparking/Non-Magnetic and corrosion resistant Safety Tool Line. CS Unitec Non-Magnetic Adjustable End Wrenches are specifically designed to eliminate the risk of sparks at high-risk sites where explosive atmospheres may be present. CS Unitec Non-Sparking Adjustable End Wrenches are available in Aluminum Bronze. CS Unitec Non-Magnetic Adjustable End Wrenches are designed to loossen and tighten nuts and bolts of different sizes by adjusting the head size. CS Unitecs Non-Sparking Adjustable End Wrenches are drop forged for the highest quality in hand tools.