The new “SKF” line of power transmission products has set a new market standard for other manufacturers of belt transmission systems. “SKF” timing belt kits contain a set of spanners, rollers and tensioners, a timing belt and additional material. The offer includes an option with and without a water pump. “SKF” is one of the few manufacturers on the market that offers PK belt sets. Mass production of bearings, spanners, rollers, tensioners and quality belts opened the possibility to offer consumers the option of a complete set of PK belts.