Headed wrench sets using beryllium bronze, aluminum bronze alloy material, made ​​by friction forging presses. For tightening or removing the hex head or square head bolts ( nuts). Sets of double-headed wrench explosion-proof performance of the highest IIC level suitable concentration of 21% hydrogen environment at the job does not produce sparks, do not detonate gas.

Headed wrench is a versatile tool for spare parts and assembly tools or hand tools transportation, agricultural machinery maintenance required. Stud wrench made ​​of high quality carbon tool manufacturing, forging a molding, advanced technology and quality assurance.
Spent two-headed wrench using beryllium bronze, made ​​of aluminum bronze alloy. Specifications and six sets of eight sets, 11 sets, 13 sets of sets of sets of double-headed box wrenches and combination wrenches