A1store Circuit Board Repair Holder~ Mobile Phone Repairing Repair Tool Circuit Board Repair Holder New BK-687 PCB Holder for Mobile Phone PDA mp3. Theree pieces bayonet can be move, you can choose the best position to holer your circuit board. You can stop the PCB holder in your table when you are removing the big BGAIC. When you install your circuit board to the holder, it is better to install one side then the other.