Best quality 43mm Coal Mining Drill Bit - Factory Direct Tungsten Carbide Ball Tooth Bits – Shanghai HY Industry
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Best quality 43mm Coal Mining Drill Bit - Factory Direct Tungsten Carbide Ball Tooth Bits – Shanghai HY Industry,
1. wear resistance
2. high efficiency
3. long service life
4. direct selling with reasonable price
5. MOQ: 1pcs for checking the quality
6.customized order is available
General application:
suitable for cutting, drilling various hard Non-ferrous materials, such
as marble, granite, glass, ceramic, hard concrete and brick
