New Heat Sync Brand Anodized Aluminum Alloy Heatsinks, H-Shaped, Splayed Fins, 2.250" x 2.199" x .418," Part Number ATS-1216, or ATS056057011-1216-C2-R0.  Each bid quantity is for a Lot of Two (2) Heat Sinks.  You may bid / buy any number of lots, up to the total quantity available above.

These were purchased at an electronics supplier liquidation earlier this year, and they were brand new in the original factory boxes.  We repackaged them in heavy Ziplok bags so they will ship fast and cheap.  These are made with

According to the calipers

Overall length (measured parallel with fins):  2.199" / 55.87mm

Overall width (measured perpendicular to fins):  2.250" / 57.22mm

Height:  .418" / 10.62mm

Cutout at each end:  .555" / 14.11mm x .485" / 12.33mm

Thermal pad dimensions:  1.110" / 28.21mm (square)