CS Unitec Non-Sparking / Non-Magnetic Open End Wrenchs are a part of CS Unitecs Non-Sparking/Non-Magnetic and corrosion resistant Safety Tool Line. CS Unitec Non-Magnetic Open End Wrenchs are specifically designed to eliminate the risk of sparks at high-risk sites where explosive atmospheres may be present.CS Unitec Non-Sparking Open End Wrenchs are available in Aluminum Bronze and Copper Beryllium. CS Unitec Non-Magnetic Open End Wrenchs are designed to loossen and tighten bolts. CS Unitecs Non-Sparking Open End Wrenchs are drop forged for the highest quality in hand tools.Prop. 65 Warning for California ResidentsWARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.