The exchangeable ICP-type cutter heads are recommended for machining carbon and alloy steels (ISO P material group). They are commonly used for machining railway parts and have received good reviews in the drilling process of production bogies. With a combination drill, both drilling and chamfering operations can be performed with just one tool. ISCAR has also designed different diameters, cutting depths and overhangs for this type of drill bits, which increases its cutting application range, not only shortens the processing cycle, but also reduces the number of drill bits used in related processes.