... & Contour Punched.· FR1 Single Sided PCB with Green Soldermask, Yellow Legend, Hole & Contour Punched.· FR4 Single Sided PCB with CNC Drilled Holes, Black Soldermask, White ... Pad, White Legend, Hole and Contour Punched.· CEM1 Single Sided PCB with CNC Drilled Holes, Silver Jumper, Slot & Contour Punched.· FR1 Single Sided ...