Standard Pack = 1 piece(s). Distance Across Flats = 7/16 IN ; Insert Inscribe = 1/4 ; Maximum Bore = 2 1/4 IN ; Minimum Bore = 1/2 IN ; Overall Length = 3 3/4 IN ; Right/Left Hand = Right ; Shank Diameter = 1/2 IN ; Type = High Performance Indexable Boring Bars ; Use Insert = TPG-22 ;