4mm Uni-Pro 2FL Ball, Necked 30? Helix Std Length Carbide End Mill, Plain Shank, Firex Coated, 8mm LOC, 13.4mm Reach 8MM LOC,6MM SHANK,57MM OAL UNI-PRO Right Hand 30? Helix, Right Hand Cut, 2 Flute Ball Nose Standard Length Universal General Purpose Center Cutting Carbide End Mill with 13.40mm Extended Neck Relief, Plain Cylindrical Shank, Firex Coated Series 3679 Guhring Part #9036790040000