Features The kit contains 5 interchangeable aluminium tubes, which are commonly used parts in the field of robotics, perfect replacement for old or broken ones, I believe they can make your life more convenient. The inner diameter of the axle pipe fittings is 10mm and the outer diameter is 12mm, which can be used to structurally support the chassis with stable performance and strong practicality. The seamless aluminium straight tube can be used as a shaft in a rotating assembly or as a sleeve with an outer diameter of 10 mm, high quality, reliable and safe. The aluminium tube with circular hollow structure is easy to install and disassemble, it does not take too long, is easy to use and easy to use. The industrial robot parts are made of high-quality aluminium, which is lightweight and comfortable, easy to install and replace, not easy to corrode after prolonged use, exquisite workmanship, smooth and delicate appearance, durable and durable. Specification: Item type: aluminium tube. Model: 6100-1012-0200. Material: aluminium. Outer diameter: approx. 12 mm / 0.5 inches. Inner diameter: approx. 10mm Length: Approx. 200 mm / 7.9 inches. Application: in the field of robotics, it can be used for structural support of the chassis Package list: 5 x aluminium tubes Package List 5 x Aluminum Tube