1-1/4" Internal Diamond Stone Drill Bit
1,drilling stone,concrete,asphalt
2,good performance,long use life
3,reasonable price

1-1/4" Internal Diamond Stone Drill Bit:

Diamond core drill bits are used for drilling all kinds of stones,glass,ceremics,refractory materials and reinforced concrete and soon,with high efficiency,long life and stardard drill hole.

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Different diameters are available according to customers requirements.