This is a set of two heat sinks, TF1312A-2. I used them when I built my own Kaneda-style and Kubota-style amplifiers. I disassembled the amplifiers and stored these, but I'm selling them because I don't plan to use them. The size of each heat sink is approximately 150mm x 55mm x 120mm. There are multiple scratches and stains from use. Please check the photos for the condition and consider purchasing only if you understand. Please refrain from purchasing if you are concerned about minor details or are overly sensitive. We do not offer individual sales. We do not accept price negotiations. We plan to wrap them in bubble wrap and ship them in a box. #HeatSink #HeatSink #Audio #Amplifier #Semiconductor #Transistor #FET #DIY #Electronics #KanedaStyle #KubotaStyle