SpirLED COB & SMD LED Heat Sinks Wakefield-Vette SpirLED COB and SMD LED Heat Sinks for active and passive cooling are compact in size with a large amount of surface area. The series features a modular design with mounting holes for direct mounting of LED modules and COBs. The heat sinks are black anodized and extruded from highly conductive aluminum. Wakefield-Vette SpirLED heat sinks are compatible with many different LED modules and COBs.