Note:This heatsink come without any thermal tape or adhesive tape, we recommend using some glue (here is not included) to stick.Feature:With smooth surface.It only take seconds to install, easy to install. Application:Aluminum heatsink can be applied to devices to cool MOS, GPU, IC Chip, etc.. Specification:Color: SilverMaterial: Aluminum AlloyOverall Size: 12 x 12 x 3 mm / 0.47 x 0.47 x 0.12 inch (L*W*H) Package Content:40 x Heatsink