In theory, an ideal rod gradually taper from butt to tip, be tight in all its joints (if any), and has a smooth, progressive taper, without 'dead spots'.
Modern design and manufacturing technology, along with advanced materials such as graphite, boron and fiberglass composites and stainless steel (see Emmrod) - has made rod makers to tailor both the shape and the effect of fishing rods for greater casting distance, accuracy, and fish-fighting properties. Today rods identified by its weight (i.e. the weight of the line or lure required to bend a loaded rod) and action (describing the location of the maximum flex along the length of the rod).
Generally there are three types of rods currently used graphite, glass fiber and bamboo sticks. Bamboo rods are the heaviest of the three, but people still use it for its sense. Fiberglass rods are the heaviest of the new chemical material made rods and most popular of the new and young fishermen because they are virtually indestructible. Today's most popular rod tends to be graphite for its lightweight properties and its ability to allow for further and more accurate cast.
Modern fishing rods retain cork as a common material for the handles. Cork is lightweight, durable, keeps warm and tends to transmit rod vibrations better than synthetic materials, although EVA foam is also used. Roller mounts are often of graphite-reinforced plastic, aluminum or wood. Guides are available in steel and titanium with a wide array of high-tech efforts metal alloy replacing the classic agate posts from previous staffs.
Back-or butt-rests can also be used with modern fishing rods to make it easier to pull big fish out of the water. These are fork-like support that helps keep the rod in place, providing leverage and counteracting tensions caused by a caught fish.