छोटे छेद ड्रिलिंग गोलाकार कार्बाइड के साथ कॉपर ड्रिल बिट

Video Description:
Discover the T45 3050mm MM/MF Mining Rock Drilling Tools Thread Drill Rod, designed for efficient rock drilling with high precision CNC machining. Ideal for mining applications, this drill rod features a flushing hole for water or air transmission and durable threads for secure connections.
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