DealMux Led Energy Saving Lamp Heatsink Cooling Fin Cooler 28mmx9mmx30mm 3 Pcs Product Name : Cooling Fin;Material : Aluminium Color : Silver Tone;Outer Diameter : 28mm / 1.1' Inner Diameter : 9mm/ 0.35';Total Height : 30mm/ 0.59' Weight : 79g Package Content : 3 x Cooling Fin