6 Down TheHole (DTH) Hammer Bit with Concave Face with Dome 18 buttons, 8 splines

NEW, out of original box – laid around shop shelf dirty, no field use!! 6 Down TheHole (DTH) Hammer Bit with 2 large air ports, Concave Face w/ Dome 18 buttons, 8 lower splines with smooth non-spline top neck. Original box gone, not sure about proper part number.