... COMPUTER PCB· FR1 Single Sided PCB with Peelable Mask, V-Score.· FR4 Single Sided PCB with Red Solder Mask, HASL Finish, Contour ... Punched.· FR1 Single Sided PCB with Flash Gold, Peelable Mask, ... , Yellow Legend, Hole & Contour Punched.· FR4 Single Sided PCB with CNC Drilled Holes, Black Soldermask, White legend, Slot & Contour ...