Pair of Ferrite Cores for noise suppression
Eliminates AC noise
Easy installation in a snap
Fits over existing cables
Two for $5
first one measures (in inches) 1 3/8 long, 3/4 outside diameter, 1/4 inside diameter
second one measures (in inches) 1 1/2 long, 7/8 outside diameter, 1/2 inch inside diameter
Free on street parking in front of my house