SKS is an abbreviation of "Scheffer-Klute Sundern". It is made up of the surname of the company's founder, Karl Scheffer-Klute, and the location of the company (Sundern, Germany).
Since its foundation in 1921, SKS has achieved a very good reputation as a manufacturer of high-quality bicycle accessories, in particular mudguards, air pumps, bottle cages and other bicycle accessories that make cycling more comfortable and safer.