TH10 (777): Eektrik and light sources

TH11 (787): electricity, steel alloys, copper, aluminum and so on. metal sources

TH13 (888): Continuous, gas and argon is used sources (MIG-MAG-TIG).

 

110mm x 80mm x 3.0mm - Large Glass

110mm x 50mm x 3.0mm - Narrow Glass