AE 166564 In-Line Low Profile Filter100 Mesh Screen - 3/8 Hose BarbReplaces Miller 166564For Miller Coolmate or any cooler with 3/8" id coolant linesReplacement filters available at: Miller 166564-100 Mesh Filter Strainer for 166564 Filter166564 166564-100AE 166564 Can be installed on any water cooler with 3/8" id. return hoses to filter mini-particles.