HEATSINK LED 50.8MM NO FINISH; Product Range:S Series; For Use With:Star LEDs; Heat Sink Material:Aluminium; Thermal Resistance:4°C/W; External Height:50.8mm; External Diameter:69.8mm; External Diameter - Imperial:2.75"; External Diameter - Metric:69.8mm; External Height - Imperial:2"; External Height - Metric:50.8mm; Packages Cooled:LED