Features 1、The kit contains 5 replaceable aluminum tubes, which are easy to install and disassemble to meet various support needs. 2、The inner diameter is 6mm, the outer diameter is 8mm, the size is standard and easy to install and replace. 3、Can be used as a shaft in a rotating assembly, or as a 6mm shaft, a spacer or a sleeve on a support. 4、Commonly used in the field of robotics, can be used to add structural support to the chassis. 5、Made of high‑quality aluminum material, light weight and high strength, not easy to deform after long‑term use. Specification Item Type: Aluminum Tube Model: 6100-0608-0200 Material: Aluminum Outer Diameter: Approx. 8mm / 0.3in Inner Diameter: Approx. 6mm / 0.2in Length: Approx. 200mm / 7.9in Application: In the field of robotics, it can be used to add structural support to the chassis Package List 5 x Aluminum Tube