OdiySurveil(TM) 100 x 40 x 20MM Aluminium Heat Diffusion Cooling Fin Product Name : Cooling Fin;Material : Aluminium; Size : 100mm x 40mm x 20mm / 3.9" x 1.6" x 0.8"(L*W*H); Color : Silver Tone;Fins Number : 11; Weight : 106g,Base board thickness:4.2mm,pin board thickness:1.5mm(1.8mm for two pin boards outside); Package Content : 1 x Cooling Fin(Note:Some scratches may be caused in the production process).