Raspberry Pi 2/3 Copper Heat Sink Heatsink With 3M Special Thermal Cooling Paste / Raspberry Pi 2/3 Copper Heat Sink Heatsink With 3M Special Thermal Cooling Paste . . . Material: Copper . .

Excellent product and excellent price. Very fast delivery too (next day)Sticky pads on the back of each one.Both the taller heatsinks are the same size, which is just slightly smaller than the main processor sadly.Solid copper, cast block with milled top. Nothing fancy. Exactly what it shows in the picture.

1 out of 3 heat sinks has 3M adhesive (Blue Backing), all others are cost-cutting cheap. Heat sinks do not work with Raspberry Pie 3, too big, like others have noted.

Great product I bought a set of 2 for my raspberry pi 3b's but to my dismay these are too big for the gpu. It still keeps it cool and I will recommend it to anyone with a rpi.

Functions great on my pi 3b running retropie, the small copper plate for the GPU is a great inclusion, and fits easily in 3 cases I've tested, including the official pi case.

Low-profile copper heat sinks. Working great on my little Raspberry Pi, has given me no issues since I've gotten them.

I cleaned the surface of the chip with alcohol to eliminate any surface contaminates, then firmly stuck the heatsink to the chip. After several minutes, it still had not adhered with any great strength. I wouldn't trust the contact to remain solid unless the heatsink remains upright, and even then I'd worry it may slowly migrate off the chip.

Doesn't fit RPi 3. Too small for the main CPU and too large for the other 3 locations.

The order was recieved quickly with no issues. I was surprised by the weight of the heatsinks, they were heavier then I thought. I always recomend copper over aluminum heatsinks, mass and materials count. They fit perfectly, for their intended use, on my Raspberry pi 3B. I am very happy with how well they fit and work. I will order again for my other projects.