These Non-Sparking Flare Nut Open Ring 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.
| S1*S2 mm | L mm | Weight (g) | |
| Aluminum Bronze | Beryllium Copper | ||
| 6*7 | 95 | 15 | 17 |
| 8*10 | 115 | 29 | 32 |
| 9*11 | 125 | 34 | 37 |
| 10*12 | 140 | 48 | 55 |
| 12*14 | 145 | 62 | 70 |
| 14*15 | 155 | 80 | 90 |
| 16*18 | 165 | 90 | 100 |
| 14*17 | 170 | 115 | 127 |
| 17*19 | 185 | 120 | 132 |
| 19*22 | 200 | 165 | 180 |
| 22*24 | 220 | 215 | 240 |
| 24*27 | 255 | 288 | 320 |
| 24*30 | 270 | 340 | 375 |
| 25*28 | 265 | 345 | 380 |
| 27*30 | 280 | 389 | 430 |
| 30*32 | 295 | 450 | 498 |
| 30*34 | 310 | 535 | 588 |
| 30*36 | 330 | 595 | 657 |
| 34*36 | 345 | 685 | 758 |
| 36*41 | 365 | 845 | 935 |