16mm RF100A 3FL Variable Helix, Necked Plain Shank, Bright Carbide End Mill, 32mm LOC, 108mm OAL, 58mm Reach 32MM LOC,16MM SHANK,108MM OAL RF 100 A 3-Flute, Right Hand 39?/40?/41? Variable Helix, Right Hand Cut, Plain Cylindrical Shank, Long Length, Extended Neck Relief, Center Cutting Carbide End Mill, .32mm x 45? Corner Chamfer, Bright Uncoated for Roughing and Finishing Aluminum & Aluminum Alloys, Brass, Bronze, Copper, Magnesium and Plastic Series 3473 Guhring Part #9034730160000