Diamond Coring Drill Tool Size and Set
Common specifications of diamond coring drill bits (インチ): 2 4 5 6 7 8 10 12 inches, 等. Common specifications of diamond coring drill bits (んん): 110んん, 110んん, 117んん, 120んん, 125んん, 127んん, 130んん, 150んん, 160んん, 180んん, 200んん, 等.
