We focused on maximizing your performance and the longevity of your CeramicSpeed Pulley Wheels when we designed the special Oil for pulley maintenance. Remember to add oil on the outside of the bearing seal after riding in wet conditions or washing your bike. If you are riding in harsh and wet conditions, we recommend that you choose the All Round Grease instead and grease your bearings from time to time. When using the Oil for maintenance, the recommended dose is 1-2 drops. Remember that the OSPW System has two lubrication points on the back cage plate to facilitate this process. The bottle contains 15 ml. The Story CeramicSpeed is one of the world’s leading suppliers of ceramic bearings. The company consists of two specialised sales channels, focusing on cycling and industrial applications. We have more than 15 years of experience in bearings applications, and we have developed close relationships with our component suppliers over the time – each of whom is the very best in their fields. The CeramicSpeed Sports channel delivers both bearings as well as ultrafast racing chains, reinforcing the company’s goal of saving watts and delivering the lowest friction available. All our bearings are handmade and our chains are optimised by hand in Denmark.