Protection and piece of mind! Don't risk damage to that new chrome plating or powdered surface! Use this 140 piece set (1/8in.,11/64in.,3/16in.,1/4in.,11/32in., 13/32in.,1/2in.I.D.) under hardware to protect the surfaces. Washers are milky in color and can be trimmed (if necessary) to inconspicuously fit under bolt heads or metal washers. Prevent leaks, (use one on every oil change), and prevent vibration from loosening hardware.