Standard Pack = 1 piece(s). Bar Diameter = 3/4 IN ; Head Diameter = 3 IN ; Hole Diameter = 3/4 IN ; Hole Spacing = 15/16 IN ; Offset or Travel = 1 1/4 IN ; Overall Length = 7 1/2 IN ; Shank Diameter = R-8 ; Shank Length = 4 IN ; Shank Style = R-8 Shank ; Type = Boring Head With Integrated Shank ;