1/4" Dia, 1-1/8" LOC, 3" OAL Fullerton Square End Mill, manufacturer part number 32550.
Specifications: Cutting Diameter: 1/4 in (0.2500 in, 6.35 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: 1/4 in (0.2500 in, 6.35 mm); Number of Flutes: 4; Helix Angle: 30 degrees; Double Ended: No; Coolant Option: External Coolant; End Type: Square; Hand Direction: Right; Helix Direction: Right; Length Type: Extra Long.
Coating/Finish: Uncoated. Unit of measure: Inch.