Helical Solutions 46301 | H40ALV-RN-R-30500 1/2" Diameter x 1/2" Shank x 5/8" LOC x 1-3/8" Reach x 3" OAL 3 Flute Single End Zplus Coated Solid Carbide Reduced Neck Square End Mill For AluminumProduct Specifications Tool Description H40ALV RN R 30500 Mill Diameter (Inch) 1 2" Mill Diameter (Decimal Inch) 0. 5000" Number of Flutes 3 Length of Cut (Inch) 5 8" Length of Cut (Decimal Inch) 0. 6250" Material Solid Carbide Overall Length (Inch) 3" Overall Length (Decimal Inch) 3. 0000" Shank Diameter (Inch) 1 2" Shank Diameter (Decimal Inch) 0. 5000" Finish Coating Zplus Overall Reach (Inch) 1 3 8" Overall Reach (Decimal Inch) 1. 3750" Center