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The difference of the price

The adjustable diameter of the VMD drill bit connection rod and extension rod is 100mm, 150mm, 200mm, 250mm, 300mm and 400mm

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U3 U2 Multi Function Tool Grinder for CNC Engraving Cutter Lathe End Mill Drill Bit Flat Bottom Knife Sharpener

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75mm 94mm 113mm 120mm 133mm 153mm Diamond Non-core Drill Bit Machining Process 3 Wings Step Arc Water Well Rock PDC Drill

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Drill Bit Re-sharpener MR-13B Portable Grinding Machine Electric Easier Operation and No Skill Drill Grinder Machine 3-13mm

3-13mm Fully Automatic Twist Drill Sharpener – 220V 180W High-Precision Grinding Machine for HSS & Carbide Bits

GD-320 Electric Milling Cutter Grinder Drill Sharpening Machine Drill Bit Grinding 220V 4500rpm 3~20mm CBN/SDC Multi-blade End M

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SD00H SD05H SD10H SD15H SD20H SD25H SD30H Extended deep hole drill bit It can be repositioned and the diameter can be changed

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