Standard Pack = 1 piece(s). Type = Face Mill Arbor ; Arbor Size = 1.5 Inch ; Coolant Supply = Optional Through Arbor Screw ; Hub Diameter = 1.5000 Inch ; Material = 8620 Steel ; Overall Diameter = 2.50 Inch ; Overall Length = 2.21 Inch ; Style = Single Ended ; Taper Type = CAT40 ; Width = 3.80 ;