Standard Pack = 1 piece(s). 1st Max Cut Depth In = 0.4724 ; 1st Max Cut Depth mm = 12 ; Adapter/Shank/Bore Diameter Inch = 0.2362 ; Adapter/Shank/Bore Diameter mm = 6 ; Effective Cutting Diameter In = 0.1575 ; Effective Cutting Diameter mm = 4 ;