Lubricates drive pins through rubber bushings like the Lucas-Girling HP2 floating calipers on my Audi. Also guide pins which include a small rubber bushing as part of the pin itself, like on our Honda CR-V (Pin B). Rubber doesn't swell like fat. I also use their green Ultra Disk Brake Caliper Lube (grease) on metal-to-metal contact points or pins that don't make contact with rubber parts or bushings. The right product for the right application.