1/2" Dia, 3/4" LOC, 6" OAL M.A. Ford Square End Mill, manufacturer part number 13850011N.
Specifications: Cutting Diameter: 1/2 in (0.5000 in); Length of Cut: 3/4 in; Overall Length: 6.0000 in; Shank Diameter: 1/2 in; Number of Flutes: 3; Helix Angle: 36 degrees; Shank Type: Straight; Neck Length: 3-3/8 in; End Type: Square.
Material: Solid Carbide. Coating/Finish: Uncoated. Series: TuffCut X-AL. Unit of measure: Inch.