Led Light Lamp Heat Sink Radiator Cooling Fin 80mmx33mmx30mm 3 Pcs Product Name : Cooling Fin;Material : Aluminium Color : Silver Tone;Mounting Hole Diameter : 2.6mm Mounting Hole Spacing : 31mm/1.2" 18mm/0.7" 36mm/1.4";Outer Diameter : 80mm / 3.1" Inner Diameter : 33mm/ 1.3";Total Height : 30mm/1.2" Weight : 271g;Package Content : 3 x Cooling Fin