Cornell Dublier 500pf Silver Mica capacitor 5% 500V CD15FD501JO3

Cornell Dublier 500pf Silver Mica capacitors (part # CD15FD501JO3 ) - these are the dark, purple/brown color - type, the fatter / thicker type, ....not like the "slim-jim" looking ones, great quality, perfect upgrade (from the ceramic disk type) for your amplifier / build - treble circuit. Dwindling supply.