The CeramicSpeed OSPW System has been proven to be the fastest pulley system in the world, and for good reason. No pulley wheel system on the market today has been tested to provide the same energy savings, between 30% and 60%, as the CeramicSpeed OSPW System. The energy savings found in our unique OSPW Systems are a result of sleek design, high-quality materials, a tested and verified understanding of the impact spring tension and chain length on efficiency,along with two high precision aluminium pulley wheels that carry CeramicSpeed Bearings.