5/16" Dia, 1/2" LOC, 2-1/2" OAL Fullerton Square End Mill, manufacturer part number 34553.
Specifications: Cutting Diameter: 5/16 in (0.3125 in, 7.94 mm); Length of Cut: 1/2 in (0.5000 in, 12.70 mm); Overall Length: 2-1/2 in (2.5000 in, 63.50 mm); Shank Diameter: 5/16 in (0.3125 in, 7.94 mm); Number of Flutes: 4; Helix Angle: 38 degrees; Double Ended: No; Color: Blue-Gray; Length Type: Standard; Coolant Option: External Coolant; End Type: Square; Hand Direction: Right; Helix Direction: Right.
Coating/Finish: FULCOAT 18. Unit of measure: Inch.