Protex Brake Drum DRUM4094 Ultra-Ceramic-Plus They are electronic devices used

They are electronic devices used to indicate how much material is left before disc pad replacement is required

Anti drain-back valve preventing oil draining back out of the filter through the inlet holes

Features include:

Strong internal components such as springs and element assemblies

created by heating the pads to a high temperature at the factory to remove remaining gases and resins

Protex Brake Drum DRUM4094 Ultra-Ceramic-Plus They are electronic devices usedGround finished and balanced for smooth braking Advanced design for low noise Precision drilled and machined for accurate fit. Complete with wheel studs, where applicable Maximum durability