5/16" Dia, 1-1/8" LOC, 3" OAL Fullerton Square End Mill, manufacturer part number 30038.
Specifications: Cutting Diameter: 5/16 in (0.3125 in, 7.94 mm); Length of Cut: 1-1/8 in (1.1250 in, 28.58 mm); Overall Length: 3 in (3.0000 in, 76.20 mm); Shank Diameter: 5/16 in (0.3125 in, 7.94 mm); Number of Flutes: 4; Helix Angle: 30 degrees; Double Ended: No; Color: Violet-Gray; Coolant Option: External Coolant; End Type: Square; Hand Direction: Right; Helix Direction: Right; Length Type: Extra Long.
Coating/Finish: TiAlN. Unit of measure: Inch.