Ratchet  Wrench,internal and external materials are aluminum  bronze (also available beryllium bronze)production,petrochemical natural gas,mining gas station,gas station,liquefied petroleum gas,phamaceutical,mining and other inflammable and explosive place.There is also called non-sparking tools.

    And in strict accordance with the national similar products the highest level of quality detection means testing, completed the explosion-proof  ratchet wrench accord with China's national explosion-proof tools all requirements of quality standard GB10686-89, with national light industrial quality supervision and inspection center to issue the explosionproof qualification certificate. What you buy a piece of explosion-proof ratchet wrench are qualified products, please feel free to use.