5/16" Dia, 7/16" LOC, 2" OAL M.A. Ford Square End Mill, manufacturer part number 27831200B.
Specifications: Cutting Diameter: 5/16 in (0.3125 in); Length of Cut: 7/16 in; Overall Length: 2.0000 in; Shank Diameter: 5/16 in; Number of Flutes: 5; Helix Angle: 40 degrees; Shank Type: Straight; End Type: Square.
Material: Solid Carbide. Coating/Finish: ALtima Blaze. Series: TuffCut XT. Unit of measure: Inch.