Standard Pack = 1 piece(s). Distance Across Flats = 5/8 inch ; Insert Inscribe = 1/4 ; Maximum Bore = 2 1/4 inch ; Minimum Bore = 1/2 inch ; Overall Length = 4 1/4 inch ; Right/Left Hand = Right ; Shank Diameter = 5/8 inch ; Type = High Performance Indexable Boring Bars ; Use Insert = TPG-22 ;