Standard Pack = 1 piece(s). Arbor Diameter = 1/2 IN ; Fits Shell Reamer = 13/16-1 1/32 IN ; Material = High Speed Steel ; Overall Length = 9 1/2 IN ; Shank Diameter = 5/8 IN ; Shank Taper = 2 MT ; Shank Type = Straight Shank ; Size = 5 IN ;