1153 Square key wrench

Non sparking wrenches are actually a kind of Explosion proof tool,they are the most widely used in the non sparking tools.Non sparking spanners specifically inculde non sparking adjustable wrench,double box end wrench,double open end wrench,combination wrench,striking box end wrench,striking open end wrench,striking box wrench convex,striking box wrench bent,valve square driver,hex allen key,valve wheel hook,hook spanner,bung wrench,ratchet wrench and so on.

The material can be aluminum bronze or beryllium copper.

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