EXOCARB® AERO DLC High Speed Carbide End Mills for Aluminum Alloy List 2874: 3 Flute, Stub Length, Coolant-Through WorkMaterial Aluminum Alloy Depth aa ar of Cut 0.4D 1D Mill Dia. SpeedRPM Feedin/min 3/4 ≤33000 ≤1010 IPM 1 ≤33000 ≤1280 IPM List 2974: 3 Flute, Stub Length, Coolant-Through WorkMaterial Aluminum Alloy Depth aa ar of Cut 0.4D 1D Mill Dia. SpeedRPM Feedin/min 20 ≤33000 ≤1010 IPM 25 ≤33000 ≤1280 IPM WWW.OSGTOOL.COM End Mill Technical 1063