Pipe stems

A group of eight pipe stems with six of the eight appearing to be black plastic. Two of those have protruding parts, one of them a metal shaft, to connect the stem to the body of the pipe. The remaining stems consist of one made of brown plastic or horn with a metal shaft extending out to connect to the body of the pipe, and one with an amber-colored mouthpiece that may be made of plastic with the remainder of the stem made from wood.