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