Embodiments of shaft torque profiling apparatuses and methods of use are generally described herein. The plural electronic options include electronic option terms established by one or more suppliers who can supply the goods or services or events. The entire lower surface of the body has a concave curve in one embodiment. The tubing includes another region continuous to the first region, wherein the other region includes at least one corrugation in the cylindrical wall. Such an arrangement provides improved lever feel and substantially prevents transverse loading of the piston.