1,Manufactured with hign quality synthetic diamonds mixed evenly through a tungsten carbide matrix 2,Performng perfect abroad hight auqlity BQ NQ HQ Core bit Impregnated diamond core bits can penetrate a broad range of formations from the sofest to the hardest rocks.ITEMDIAMOND BITREAMING SHELL"Q"SeriesWirelineSizeBit-set ODBit-set IDmminchmminch mm inchAQ47.601.8826.971.0648.001.89BQ59.502.3536. ...
