With stiffer, optimized drill body, CoroDrill® 880 Series covers hole diameters from 0.472-3.307 in. off-the-shelf, as well as engineered solutions up to 5.078 in. Drills produce holes with tolerances of H12–13 and are suitable for holes up to 5 X drill diameter. GC4324 and GC4334 insert grades are designed with Inveio™ coating for wear resistance, while GC4344, produced with Zertivo™ technology, provides edge-line security as a result of optimal coating and substrate adhesion properties.