Features: Product dimensional accuracy exceeds the German DIN standard Safety exceeds the U.S. ASME standards: ASME B107.47M-1998 Made of 60CR-V material for high strength and good toughness. Product dimensional accuracy exceeds the German DIN standard Safety exceeds the U.S. ASME standards: ASME B107.47M-1998 Made of 60CR-V material for high strength and good toughness. Chrome plated surface, strong rust resistance