Product Name: Pin Fin Aluminum Heat Sink for COB LED Grow Light Model NO.: LT-05101116 Forging Tolerance: +/-0.1mm Surface Treatment: Anodizing Material: Aluminium Machining: CNC Machining Application: LED Lighting Molding Technics: Cold Forged Molding Style: Forging Processing Object: metal Trademark: Langteng Transport Package: Pearl Cotton+Carton+Wood Pallet Specification: Dia 120mm, 133mm, 160mm, 180mm Origin: Zhejiang Province HS Code: 8541900000 Product Description Over 20 Years Experience in Thermal Solutions FieldProducts LineWhy Design with Pin Heat Sinks?Pin heat sink have a unique pin geometry that uses surrounding air streams for a very effective cooling. The round, aerodynamic pin design reduces resistance to surrounding airs streams that enter the pin array, while simultaneously increasing air turbulence. The omnidirectional pin configuration allows air to enter and exit the heat sink in any direction and exposes the heat sink to the fastest possible air speed. The superior airflow and the high emissivity of the anodized heatsink surface allows Pin heatsink to offer an exceptional cooling for your COB LED. Compared to other undersized Pin Heatsinks, our large pin heatsinks are rated to provide better cooling and ensure reliable LED operation and minimum Light Loss over time.DiameterbaseHeightWeightThermal ResistanceRecommended Watts105mm10mm10mm+50mm350grams1.2 C/W25W to 35W Led or 20W Heat120mm10mm10mm+60mm500grams1.00 C/W35W to 60W Led or 35W Heat133mm10mm10mm+60mm600grams0.85 C/W50W to 75W Led or 50W HeatWork Shop3500tons Hydraulic Press Machine600tonsHydraulic Press Machine10 Sets CNC Machine