The Economy 20 plate heat exchanger is the fastest way to chill your wort to yeast pitching temperature to get your fermentation off to a quick healthy start.
The Economy is made from stainless steel and brazed together with pure copper. It also has ripples up and down each plate. This creates more surface area and improves heat transfer. 1/2 in barbs.
Set up one side with Wort in & out, and Water out & in on the other side.