10 armatures: 20mm, 18mm, 16mm, 14mm, 12mm, 10mm, 8mm, 6mm, 5mm, 4mm They vary in length and are not perfect. They are generally 2” long. Some of the smaller rods will come in multiple pieces. Which are still completely usable All high temp rods (alumina and carbon electrode cylinder) Comes in a small clear stacking box with bubble inside. Will