These Non-Sparking Drill Bit Set 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.
| Φ mm | L mm | Weight (g) |
| Beryllium Copper | ||
| 6 | 100 | 20 |
| 7 | 120 | 30 |
| 8 | 140 | 50 |
| 9 | 160 | 75 |
| 10 | 180 | 100 |
| 11 | 200 | 120 |
| 12 | 220 | 170 |
| 13 | 240 | 220 |
| 14 | 260 | 280 |
| 15 | 280 | 360 |
| 16 | 300 | 440 |
| 17 | 300 | 500 |
| 18 | 320 | 600 |
| 19 | 320 | 700 |
| 20 | 330 | 800 |