uxcell 115mmx50mmx80mm Cylindrical LED Ceiling Lights Heatsink Cooling Fin 2 PCS Product Name : Cooling Fin;Material : Aluminium Color : Silver Tone;Mounting Hole Diameter : 23mm/0.9" Mounting Hole Spacing : 45mm/1.8";Outer Diameter : 115mm / 4.5" Inner Diameter : 50mm/ 2";Total Height : 80mm/ 3.1" Weight : 905g;Package Content : 2 x Cooling Fin