Over the rod is a body form with arms attached controlled by separate rods. Crankshaft, connecting rods and pistons were all forged. The connecting rods and crankshaft are constructed of steel. Steel elements are repaired by welding, usually with stainless steel rods. This also included shot peened and forged pushrods, connecting rods and pistons. Billets are hot or cold rolled into bars, rods, and wire. H beam rods and piston cooling jets. Fiberglass rods are the heaviest of the new chemically-made material rods. Lateral axle movement is prevented by panhard rods and transverse links. The quadrupole consists of four parallel metal rods. It is used as a stabilizer for the coating on welding rods. They receive inputs from intermediate numbers of rods and cones. They receive inputs from relatively few rods and cones. They receive inputs from relatively many rods and cones. There are major functional differences between the rods and cones.