5.5mm Uni-Pro 2FL Necked 30? Std Length Carbide End Mill, Plain Shank, Uncoated, 10mm LOC, 57mm OAL, 21mm Reach 10MM LOC,5.5MM SHANK,57MM OAL UNI-PRO Right Hand 30? Helix, Right Hand Cut, 2 Flute Standard Length Universal General Purpose Center Cutting Carbide End Mill with .05mm x 45? Corner Chamfer, 21mm Extended Neck Relief, Plain Cylindrical Shank, Bright Uncoated Series 3303 Guhring Part #9033030055000