White Strong & Flexible: White nylon plastic with a matte finish and slight grainy feel.
About this Product
13/16" Diameter, 3/32" Thick and two 1/8" Diameter holes. One side contains a full wave bridge rectifier (has 4 triangles on a square) which converts AC to DC. The other side is a summing op amplifier (looks like a squid) which combines multiple signals.