E.N.I.G(Au/Ni) board Material :FR-4 Board thickness :0.062" ... Trace width/space :8 mil/8 mil E.N.I.G(Au/Ni) board· FR1 Single Sided PCB with Peelable Mask ... Mask, HASL Finish, Contour Punched.· FR1 Single Sided PCB with Flash Gold, Peelable Mask, White Legend, Hole & Contour Punched.· FR1 Single ... & Contour Punched.· FR1 Single Sided PCB with Carbon Jumper, Gold Flash Key Pad, Hole & Contour Punched.