CS Unitec Clay Spade Chisel, Aluminum Bronze CS Unitec Non-Sparking Clay Spade Chisels are a part of CS Unitecs Non-Sparking/Non-Magnetic and corrosion resistant Safety Tool Line. CS Unitec Non-Magnetic Clay Spade Chisels are specifically designed to eliminate the risk of sparks at high-risk sites where explosive atmospheres may be present. CS Unitec Non-Sparking Clay Spade Chisels are available in Aluminum Bronze. CS Unitec Non-Magnetic Clay Spade Chisels are designed for working with clay or compacted dirt during demolition.CS Unitecs Non-Sparking Clay Spade Chisels are drop forged for the highest quality in Clay Spade Tools.