Rice Lake Cast Iron ASTM Class 7 Painted Grip Handle Test Weight, 10lbs Mass Metric and U.S. customary grip handle weight for testing field standards and industrial devices Painted cast iron weight has chip-resistant paint that resists corrosion and conforms to NIST Handbook 105-1 standard Meets American Society for Testing and Materials (ASTM) E617, Class 7 specification for rough weighing operations in physical and chemical laboratories, and for force-measuring apparatus