Used only for initial listening tests. Insulated with heat shrink tubing. The contents are Dayton. Both ends have terminal processing. The last photo is an image of the contents. These are Dayton Audio metallized polypropylene film capacitors. They are excellent cost-performance capacitors, designed for crossover networks, but can of course also be used in amplifiers and other applications as non-polar capacitors. Voltage rating: 250 VDC Tolerance: 5% Dayton Crossover network High-pass filter Tweeter Passive network