This grease has been formulated by Shimano to be used on a variety of different part including cables, hubs and headsets. Shimano use this grease during their own production of products as it seals out water, making parts far less likely to suffer from corrosion and you far less time trying to fix or replace them.This is an essential product for regular and serious riders. It doesn"t affect rubber seals and prolongs the life of all components that it is applied to.