Non-sparking,Non-magnetic Striking Box Wrench made of Beryllium Copper andAluminium Bronze two material. The special material can avoid risesparking when toold strike, rub with target in explosive atmosphereor flammble vapours . It wildly used in oil and gas works,petro-chemical plants, mines, pharmacy etc.

The common size from17mm to 150mm, it forged by large forge machine. The product aresold popular in abroad market, such as America, Japan, Germany,France, England, Singapore, Korea, India etc over 50countries.