These Non-Sparking Valve Square Driver Wrench are made of Aluminum Bronze and Beryllium Copper, it is a high quality grade beryllium copper alloy material and a standard grade aluminum-bronze alloy. These tools are non-magnetic and non-corrosion, very suitable used for LPG and LNG vessels, and oil-gas industry etc.
| C mm | L mm | H mm | Weight (g) | |
| Aluminum Bronze | Beryllium Copper | |||
| 6 | 110 | 9 | 55 | 65 |
| 8 | 120 | 10 | 61 | 75 |
| 9 | 140 | 11 | 75 | 90 |
| 10 | 140 | 12 | 85 | 105 |
| 11 | 160 | 13 | 102 | 130 |
| 12 | 190 | 14 | 145 | 180 |
| 13 | 200 | 15 | 151 | 185 |
| 14 | 250 | 16 | 261 | 300 |
| 16 | 250 | 18 | 285 | 335 |
| 17 | 300 | 19 | 366 | 420 |
| 19 | 350 | 20 | 662 | 740 |
| 22 | 400 | 22 | 896 | 1000 |