Let’s continue our discussion of components of the cue. The joint is the part of the cue that connects the forearm and shaft as secured by joint caps. This is essential for consistent flow of energy in every shot. The collar, on the other hand, is just a part of the joint that is attached to the top of the forearm which is used to reinforce the pin at the end of the shaft and usually made of solid material like stainless steel, wood, ivory or molded phenolic resin. Like the collar, the rings can also be found on the shaft’s end to reinforce the vulnerable joint portion of the cue and to enhance its overall look. The pin which is protected by screwed joint protector can be found at the base of the shaft to connect it with the forearm and is usually made of metal. The wrap over the cue handle, below the forearm and above the butt is made of Irish linen or leather. The wrap provides a sure grip, long life, and moisture absorption from hand sweat. Below the wrap is the butt or butt sleeve that is usually made of exotic wood. Lastly, the rubber composite bumper keeps the butt of your cue safe from incidental contact with the floor or other damaging incidents.

pic via ctcueparts.com