uxcell Led Light Lamp Aluminum Heat Sink Heatsink Radiator Cooling Fin 20mmx6mmx15mm 5 Pieces Silver Tone Product Name : Cooling Fin;Material : Aluminium Mounting Hole Diameter : 2mm;Mounting Hole Spacing : 16mm/0.63" Color : Silver Tone;Outer Diameter : 20mm / 0.8" Inner Diameter : 6mm/ 0.2";Total Height : 15mm/ 0.59" Weight : 33g;Package Content : 5 x Cooling Fin