HexChex™ - ISO Polymer Upgrade
This means better, more consistent performance over the life of the part and a melt point just outside the normal temperature range of a truck wheel under heavy breaking. This high temperature material will retain its mechanical properties right up to it's melt point. This melting effect can be used to detect hub problems but shouldn't be relied on for this purpose*
* The amount of heat transferred through the wheels depends on many factors which vary for each vehicle. It is always recommended to follow correct procedures where maintenance is required to ensure hub problems don't become expensive or dangerous.