THE KOMET DIHART EXPANDABLE CUTTING RING FEATURES A CAT 50 HOLDER, WITH AN OVERALL LENGTH (OAL) OF 17 INCHES AND A PROJECTION OF 12.75 INCHES. INCLUDED COMPONENTS ARE DIHART PARTS 510.55.008, 350.23.003, AND 545.87.00, ALONG WITH A DAH 115 COMPENSATING REAMING HOLDER.