| Product name | Speed rod |
| Size | Hex35 |
| Thread type | Female-male |
| Technology | Carburized |
| Applicable model | Drifting and tuneling |
| Raw material | Steel for rock drilling tools（Shanghai Baosteel） |
The speed rods is made of high-quality rock drill steel. The surface is carburized with high concentration. The surface hardness reaches hcr54-56 and the core hardness reaches hcr40, which not only ensures the toughness, but also strengthens the surface wear resistance. The precision machined threads make the products have better fit, so that the service life is longer.
