16layer,406.4*406.4mm(1up),FR4 material,5.08mm board thickness,1oz finished copper all layers,impedance control,Min hole 0.1mm,total hole qty:5574,Min track/gap:0.135/0.16mm,countersinked holes,Burried vias between L3-L14,0.1mm micro vias between L1-L2,L2-L3,L16-L15,L15-L14,