Antminer S19j Pro hashboard heatsinks.

3 long, 6 medium length, and 12 short.

Approximate Dimensions: LxWxH

Long- 19/16” x 10/16” x 1/2”

Medium- 3/4” x 10/16” x 1/2”

Short- 3/8” x 10/16” x 1/2”

These have a solder backing. I would guess that they can be reheated and would stick to a tinned PCB. I have not tried it though.

Useful in repairing Antminer hash boards. Can be used to cool off other devices as well.