Large Brass Tube Assortment is also known as a Hollow Wire Assortment. Large Brass Tube Assortment is a package of 5 brass tubes with outside diameters of 1.0 to 3.0mm. All tubes or hollow wires measure approximately 3" in length. Large Brass Tube Assortments are most commonly used for making Bushings but can be used for a variety of clock repairs.