About Yiannis Shop is an authorized dealer of Ultra Safety Systems, offering the world’s #1 bilge pump switches. Proudly made in the USA for over 35 years, Ultra bilge pump switches are built with the same trusted hands that started it all.We also carry Tef-Gel, the only corrosion eliminator that truly lasts forever. Unlike other products, Tef-Gel never dries out or evaporates, making it the most effective and reliable anti-seize lubricant for marine and industrial use.
