The Manual brake pad genuinely is a Simple Pad System (SPS), utilizing a single female Allen head bolt and two conical angle adjustment washers for perfect pad placement, rather than multiple washers on other conventional adjustable pads, and built around a 6061 T6 core with an extra wide and curved brake pad surface that follows the contour of your rim, the Manual brake pad, in whatever color you choose will set your ride apart and guarantee that youll stop on a dime.