Serrated blade assembly using differently configured components

A blade assembly for use with a grading machine, the blade assembly comprising:

• an adapter board including an upper adapter board attachment portion, an upper adapter board free end, a lower tool bit attachment portion, and a lower adapter board free end, wherein a lateral direction is defined along a length of the lower tool bit attachment, width is measured along the lateral direction, and a vertical direction is perpendicular to the lateral direction;
• a plurality of tool bits configured to be attached to the adapter board, each tool bit including a working portion having a working length measured along the vertical direction and a working width measured along the lateral direction;
• and
• a plurality of wear members configured to be attached to the adapter board, each wear member including:
• a shank portion having an axial length and defining a longitudinal axis along the axial length;
• and
• a wear portion having a wear length measured along the vertical direction and a wear width measured along the lateral direction, the wear portion including:
• a bottom planar surface perpendicular to the longitudinal axis, and
• a plurality of rectangular hexahedron shaped inserts attached to the bottom planar surface, each of the plurality of rectangular hexahedron shaped inserts having:
• an exterior side surface parallel to the longitudinal axis, and
• a bottom flat portion perpendicular to the longitudinal axis.