Beta Tools Copper-Berillium (Cu-Be) Spark-Proof Tools are specifically designed for safe operations in environments subject to potential risk of explosion, in the presence of flammable liquids and gases, or for any applications that require using perfectly antimagnetic, corrosion-resistant tools.All tools are certified by the Federal Institute for Materials Research and Testing (BAM) under European Directive 99/92/EC.Warning! Risk of explosion in ACETYLENE environment. The mechanical characteristics of spark-proof tools differ from those of normal steel tools. They should be used with extreme caution, avoiding overloads..tg {border-collapse:collapse;border-spacing:0;}.tg td{font-family:Arial, sans-serif;font-size:14px;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}.tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}.tg .tg-1wig{font-weight:bold;text-align:left;vertical-align:top}.tg .tg-5ua9{font-weight:bold;text-align:left}.tg .tg-s268{text-align:left}.tg .tg-0lax{text-align:left;vertical-align:top} Beta Tools - Spark-Proof Hexagon Socket Wrench Range Product Code Part Number Size L A A1 Ø Weight mm mm mm mm mm g 009370813 937BA 13 13 240 45 15 13 250 009370817 937BA 17 17 260 51 16 16 550 009370819 937BA 19 19 270 55 20 16 550 009370822 937BA 22 22 278 59 22 18 750 009370824 937BA 24 24 286 63 24 18 850 009370827 937BA 27 27 294 69 27 19 900 009370830 937BA 30 30 302 75 30 19 1000 009370832 937BA 32 32 310 81 32 19 1100 009370836 937BA 36 36 330 85 35 20 1300 009370841 937BA 41 41 350 90 38 20 1380