Product name: double sided boardcheap circuit board prototypecharacteristicthe thick plate. Gold jinhou 5 uinch. specificationslayer count: 2board thickness: 1.60mmbase materials: fr4 s1141finished size: 160*70mmsurface finish: heavy thick boardline widthline space: 55milminimum hole: 0.25mmsolder resist color: sensitive redcu thickness: 1 oz