1 Layer Copper IMS with Pedestal 1 Layer Alumimium Base with 3mm Thickness 1 Layer Copper Base with 2mm Sinking Pedestal Aluminium Base with Countersunk Holes Depth 0.4mm Pedestal Design for Automotive Lighting 2 Layers with Matte Black Soldermask 2 Layers Copper Base with Countersunk Hole Aluminium Base with Precise Solder Mask Opening