K&S Brass Round Tube Stock, 1/2 In. O.D. x 1 Ft. is a versatile and commonly used material i for a wide range of projects. This brass tube is highly favored by craftsmen, handymen, machinists, hobbyists, and modelers due to its durability and ease of use. Whether you are working on detailed models or practical mechanical applications, this brass round tube stock provides the quality and reliability needed to achieve excellent results. Model Number: 8139