Non Sparking Non Magnetic Explosion Proof Safety Socket Set,1/2

Non sparking non magnetic explosion proof safety socket set, 12" drive, 28 pc.
1> material: copper beryllium or aluminum bronze alloy;
2> process: punched forged;
3> weight: copper beryllium (9050g);aluminum bronze(8520g)
4> specs:
socket drive(inch) 12''
socket (mm) 10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,26,27,28,30,32mm
ratchet 12''*245mm
bar sliding 12''*250mm
bar extensiion 1'2''*125mm,12"*250mm
speed handle 12*400mm
universal joint 12"
bit adaptor 12''
5> used in flammable and combustible atmosphere,safety workplace,such as oil,gas,lng,lpg,shipyards,aircraft,nuclear,military industry etc.
6> brand: qiaofang (famous in china since-1983)
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there are 2 kinds of non-sparking, non-magnetic materials available:
1. be-cu: beryllium copper (best material for non sparking non-magnetic tools, the very highest quality)
2. al-cu: aluminium bronze (economic material for non sparking tools, still excellent)
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also welcome to invited me on my skype,so that we can talk online in time.
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