10mm RF100A90? 4FL Variable Helix, Necked Plain Shank, Standard Length Bright Carbide End Mill, 22mm LOC, 30mm Reach 22MM LOC,10MM SHANK,72MM OAL RF 100 A 90? 4-Flute, Right Hand 40?/42? Variable Helix, Right Hand Cut, Plain Cylindrical Shank, Standard Length, Extended Neck Relief, Center Cutting Carbide End Mill, Sharp Corners, Bright Uncoated for Roughing and Finishing Aluminum & Aluminum Alloys, Brass, Bronze, Copper, Magnesium and Plastic Series 6762 Guhring Part #9067620100000