| Product name | Extension Rods |
| Size | RD39 |
| Thread type | Male-Male |
| Technology | Carburized |
| Applicable model | Bench drilling |
| Raw material | Steel for rock drilling tools（Shanghai Baosteel） |
Tophammer drilling tools-Bench drilling-DRILL ROD- Extension Rods
Our drill rods are made of designated top-grade steel, all from Baosteel, ensuring the consistency and stability of products in terms of raw materials. Extension rod used for bench drilling has various length specifications. The external threads at both ends are processed by precision numerical control to make the thread fit better. The rod surface is carburized as a whole to balance the wear resistance and flexibility.
