Now this type is for drilling coal, water or geological exploration application. The size has 55mm, 65mm, 75mm, 94mm, 113mm, 133mm, 153mm, 171mm, 190mm, 220mm, etc. The pdc body can be steel or matrix. It not only save a lot for your drilling budget, but also increase the drilling efficiency. We insist on honesty to provide customers high performance products with competitive price.

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