SimpoLED-135100 Modular Passive LED Star Heat Sink Dia135mm * Mechanical compatibility with direct mounting of the LED modules to the LED cooler and thermal performance matching the lumen packages.* For spotlight and downlight designs from 2900 to 9800 lumen.* Thermal resistance range Rth 0.5CW. * Modular design with mounting holes foreseen for direct mounting of a wide range of LED modules and COB's: Spot Light Modules: Bridgelux, Vero 18Vero 29