CS Unitec Chain Pipe Wrench, Aluminum Bronze CS Unitec Non-Sparking / Non-Magnetic Ratchet Wrenches are a part of CS Unitecs Non-Sparking/Non-Magnetic and corrosion resistant Safety Tool Line. CS Unitec Non-Magnetic Ratchet Wrenches are specifically designed to eliminate the risk of sparks at high-risk sites where explosive atmospheres may be present. CS Unitec Non-Sparking Ratchet Wrenches are available in Aluminum Bronze. CS Unitec Non-Magnetic Ratchet Wrenches are designed to turn or hold in place a circular object. CS Unitecs Non-Sparking Ratchet Wrenches are drop forged for the highest quality in hand tools.