Non sparking striking box wrench is one of our main products, and it is also called non spark slugging ring spanner. There are two material in non-sparking safety tools, Aluminium bronze and Beryllium copper alloy.  They are not rise spark when tools strik and rub with target and  they  are  widely  used  in oil and gas,  mines,  medical  etc  explosive place. 

It is include 17mm-150mm common size in non-sparking striking box wrench,they are produced by large forged machine according to DIN standard and  gained  good  and  broad reputation becaused of best  quality,  perfect appearance  and our good service.