This is a cooler (heatsink with fan) for an Intel Celeron. This won't fit on an Intel Pentium II, Pentium III, or AMD Athlon processor, but on a Celeron it'll cool pretty well. While testing it, it blew a very strong gust of air for being 21 years old.

There seems to be an indium pad on the bottom of the heatsink, but it's dry.