With over 26 different Fanuc Master PCBs in stock. whether its a Hardinge, Makino, Leadwell, or any of the other big manufacturers. The Fanuc Master boards are from the following systems: 3, 5, 6, 10, 11, OA, OB, OC. Main CPU, masterboards from Fanuc 15, 16, 18, 21 and i generation controls.