Gunk PD11CC-12PK Electronic Cleaner - 11 oz, (Case of 12) GUNK is a local family owned company based out of Charlotte, NC. For more than 75 years, GUNK products, developed by the people who use them, has earned the trust of hard-working tradesment and the active DIYer through consistent, superior performance and a commitment to innovation. Penetrates hard-to-reach areas Dissolves dirt, dust, grease, flux, and other contaminants Regular use helps prevent contact malfunction and failure Harmless to most plastics and paper tapes