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Factory High Quality QL50 TD50 140 5.5" Down The Hole DTH Hammer Drill Bit

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Factory High Quality QL50 TD50 140 5.5" Down The Hole DTH Hammer Drill Bit


Carbide button shape selection:

1. Domed/Round Button
2. Parabolic/Semi-Ballistic Buttons
3. Ballistic Button
4. Sharp Button
5. Flat Button

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Our advantages:

We have advanced production equipments & talented researchers & technicians & rich experiences in R & D and production.
We use the best quality raw materials.
We adopt advanced production technology & strict testing procedure.
We passed ISO9001 quality management system certification.
We accept OEM manufacturing and produce on your design.

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