The Tamiya 70143 Universal Arm Set is a versatile toolkit perfect for building crank systems, link mechanisms, and robust structures for various robotic projects. This set comprises four arms with 33 precisely spaced holes, allowing for easy customization. With accompanying L-shaped brackets, spacers, and a comprehensive screw and nut set, it's designed to facilitate creative engineering solutions.Ideal for hobbyists and engineers alike, this arm set can be used to construct intricate crank systems and linkages. Whether you're working on a simple mechanical project or a complex robotic system, the components can be tailored to meet your specific requirements. The arms can be easily cut to size, and the holes can be adjusted to form longer slots, enhancing the flexibility of your designs.One of the standout features of this set is its adaptability. The four included L-shaped brackets provide essential support for axles or can serve as structural reinforcements. Additionally, the set comes with spacers of varying lengths (5 mm, 10 mm, and 15 mm), offering further customization options for your builds. This ensures that no matter the project's complexity, you have the right tools at your disposal.Each arm measures 10 cm by 17 cm, with 3 mm holes spaced 5 mm apart, providing a solid foundation for any mechanical assembly. The set also includes a variety of screws and nuts, both plastic and metal, ensuring you have everything needed to complete your project with precision and reliability.