Shimano Dura-ace Grease

This is a 50g tub of the same specification of grease as is used in the best quality Shimano bearings, and is specifically made for Dura-Ace components.
It acts as a barrier to prevent water ingress, that keeps parts rust and corrosion free, enabling them to run smoothly and increase their life.
It is also available in a 500g tub.