THIS IS A MODCO TOOLS MILLING CUTTER, MODEL 2B-31455 - C-18513. THE TOOL HAS AN OVERALL LENGTH (OAL) OF 2.48 INCHES (63MM) AND FEATURES 5 FLUTES/INSERTS. ITS OVERALL DIAMETER IS 3.4 INCHES (86.5MM), AND THE BORE DIAMETER IS 20MM. THIS HIGH-QUALITY ACCESSORY IS IDEAL FOR PRECISION TASKS AND EFFICIENT MACHINING.