There has been some speculation that the Hercules 100 Watt Amplifer kit that Gerd, DJ8AY (NT-Electronics) is building does not include the heatsink. This is not true, The heatsink is included and all mounting holes are tapped as required. I think it looks very nice and have posted a photo of it in the Wiki under "Hercules". Ron W9KFB (red_ella on eBay)