Sold as 2 UNITS at $17.85 per unit. (1 unit = 6 each.) For hobbies and model building. Each size telescopes into the next corresponding size. Easy to cut and solder. Brass. 3/16" D x 36" L . Manufacturer number: 1147. SKU #: 5032644. Country of origin: (TBA). Distributed by K&S Engineering Co.