Now, a rod has guides. These guides are also called "the eyes" because these are the ones which tells you whether there is already a caught fish or not at the end of the line. You'll simply get a "feel" if you're going to have a fish for dinner.
Just like any other equipment in fly fishing, a rod guide has several different types. Basically, the rod guides' rings are the ones responsible in preventing your lines from fraying because its purpose is to reduce friction on the lines. Some rings are made of aluminum oxide, chrome plating, gold aluminum oxide or it can be silicon carbide. But there are still some guide rings that are made from ceramics, although the ceramic material is mainly put as a metal frame on the outside of the ring.
In handling the rod, it would be best to take note of the length and the material both of the rod and the rod handle. With rod length, it isn't appropriate to own an extremely long one if you knew that you're not prepared with a particular length. On the other hand, when it comes to rod handles, it's recommended to use a handle made out of cork or foam since it wouldn't be slippery especially to fishers with wet hands.
In terms of weight, a rod would be better if it weighs medium/ moderate or heavy and not light. It's all because manageability and strength counts in getting the fish out of the water. Pulling could be a feat at times especially if the fish just won't hold still (who would ever want to hold still when you're hooked on the mouth?), that's why make sure that the rod isn't too heavy.
Going back to the rod guides or "the eyes", make sure that all your guides attached on the rod are all put in place properly. If it is, expect your line to glide smoothly along the rings, but if not, make sure that the guides aren't bent even before you begin fishing. You can maintain the good condition of your rod; guides and line by making sure each of the rings on the rod are regularly cleaned.