Thermal heatsink for COB Passive thermal dissipation max: 80-90W depending on ambient temperature Mater: AluminiumColor: BlackDiameter: 140 mmHeight: 70 mmWeight: 150 grPre-pierced for:-Adapter Ideal 50-2303 CR for CREE CXA / CXB3590-Adapter 50-22 XX Ideal for CXA / CXB3050 / 3070-Adapter ..