GRQSM and GRQRM Rhodium Plated on Silver Plugs Rhodium is an extreme hard metal that resists corrosion and conducts better than gold, silver, nickel and copper.

Cardas Audio Rhodium Plugs

These are most audio detail oriented plugs on the market. Each connection is completed with a special sealant and finished with heatshrink. (note: The right angle pole is silver in appearance like the straight)

Cardas Audio Features: Rhodium plated Resists corrosion Conducts better than golf, silver, nickel and copper	[+] click image to enlarge