... min hole:0.2mm single sided pcb board· FR1 Single Sided PCB with Peelable Mask, V-Score. · FR4 Single Sided PCB with Red Solder ... , Peelable Mask, White Legend, Hole & Contour Punched. · FR1 Single Sided PCB with Green Soldermask, Yellow Legend, Hole & Contour Punched. · ... Black Soldermask, White legend, Slot & Contour Punched. · FR1 Single Sided PCB with Carbon Jumper and Carbon Key Pad, White Legend ...