51mm diameter pin array style heatsink

Nice circular pin array style heatsinks for cooling LEDs up to 10W or so. They measure 51mm diameter by 36mm thick and have a black finish. Centre solid section is recessed 2.3mm and is 45mm diameter. There are two small holes drilled in the mounting face about 19mm apart, making them ideal for mounting standard 20mm star LEDs. There is also a 6mm diameter hole bored front to back for passing cables through to the LED.

Note that it's possible for there to be small marks in the black finish. This does not affect their thermal performance.