Routing End Mill Aluminum Rougher/Finisher Medium Length Necked Thru-Coolant High Performance Number of Flutes 3 Single End Ball Nose End Style Center Cutting Type Right Hand Cut Carbide Uncoated Finish Dia 1/4 In Shank Dia 1/4 In Length of Cut 3/8 In Overall Length 4 In Neck Dia 0.236 In Neck Length 1 3/4 In Cut Angle 40 Deg Helix Angle 40 Deg Radius 0.1250 In For Aluminum