40mm Heatsink Kit 40x40x20mm with Thermal Conductive Adhesive Tape, Aluminum Heat Sink Cooler for Cooling 3D Printer Stepper Motor Driver NEMA 17 TEC1-12706 Peltier Plate Module GPU Router

These are great for sticking on items where you may want to dissipate heat faster. We use ours on grow lights for the greenhouse, as it should help extend the LED fixtures' lives. Easy to stick, and the adhesive seems like it should last a good long time.

I use 40mm heatsinks frequently with TEG projects, and find these to provide exceptional value - most specifically, the height of the fins.Most 40mm sinks in this price range use 10mm fins, while this product's are 20mm.The included thermal transfer tape makes for quick placement of TEG/TEC tiles in project use/tinkering.Very satisfied overall with the quality and value of these heatsinks, and would gladly order more.

They're heatsinks...they work. Hard to go wrong there. Only issue I found is the thermal tape used on these isn't as good for heat transfer as actual thermal paste. But for a grab and go solution, they work well.