These Non-Sparking Monkey Type Adjustable 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.
| L mm | Kmax mm | Weight (g) | |
| Aluminum Bronze | Beryllium Copper | ||
| 240 | 45 | 470 | 510 |
| 254 | 48 | 560 | 615 |
| 305 | 58 | 820 | 910 |
| 350 | 65 | 1120 | 1220 |
| 380 | 70 | 1340 | 1465 |