Laboratory Aluminum Support Rod, 47.24" Lab stands and rods are used in every area of science - especially chemistry, for holding and manipulating an experimental apparatus. If you need to set up a home laboratory, a rod is a vital piece of equipment. This round shaft rod is made of high quality aluminum, with unthreaded ends. Rod measures 47.24" long and 13mm wide. Can be used on a lathe. Superb stability for basic experiments & setups. Its sturdy construction and economical cost makes this rod an excellent choice for science classrooms & household use.