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加拿大“金刚石钻进手册”介绍了绳索取心金刚石钻头和扩孔器规格，列出了螺纹及有关尺寸及其公差（表中两数之差），以及钻头外径与扩孔器外径匹配等，可供国内有关单位参考。
Canadian Diamond Drilling Handbook introduces specifications for cord coring diamond bits and reamers, lists threads and related dimensions and tolerances (difference between the numbers in the table), and matches the outside diameter of the drill bit with the outside diameter of the reamer For domestic reference for the relevant units.