Allstar Performance Roll Bar Padding Foam Black (Set of 48) 00127943NRRS Maintaining system pressure prevents fluid Size:7 1 8 (57 ) Maintaining system pressure prevents fluid from returning to the master cylinder when the master cylinder is positioned lower than or close to the same height as the calipers or wheel cylinders Integrated electronics jack is positioned far enough away from the HANS post anchor in order to make the use of the jack trouble free even when the HANS is worn Color: Black The 36 Inch long padding features a 3 Inch outside diameter with an offset inside diameter designed to install with the thicker side of padding toward the driver