Pliers are Drop forged Special Tool Steel Induction Hardened. Handles Proportioned for optimum torque. All Wiha insulated tools undergo extensive inspection and testing prior to sale to our customers. Wiha Tools have been individually inspected and tested to these required standards. Testing Procedures Include Insulation Performance Testing After 24 hour water immersion the tools are tested at 10,000 Volts A.C. for three minutes.
Current leakage is measured.
No spark-over from the insulation to the head or seepage through the insulation is allowed. Testing for Dielectric Performance - Wiha tools are individually tested. All tools have been tested to a voltage of 10,000 Volts A.C. and are approved for 1000 Volts A.C. Certification. Under a ten to one test standard. Testing For Cold Impact Material Integrity Testing is conducted at temperatures of -15 degrees Fahrenheit.