The head and shaft are made from a special high strength 2024 aluminum alloy. The shaft is precision ground to 27.2mm and the head is machined separately before being screwed and glued into the shaft.
The two bolts sit on spherical washers that allow them to pivot and self align to the cradle. The clamp can be adjusted to tilt the saddle's nose up or down with a range of roughly 15 degrees, and precise angle adjustments are made by loosening one screw and tightening the other. Fore and aft position is adjusted by loosening both screws and equal amount and moving the saddle. Because we use two screws slippage is eliminated.