The KUKKO Quality Tools Inc Trigger Hook Set includes ball bearings compliant with ISO standards 6007 through 6013. This set is designed for optimal performance in various applications, providing reliable and smooth operation. Each hook is constructed from high-quality materials, ensuring durability and resistance to wear. The precise dimensions and specifications of these hooks make them suitable for a wide range of mechanical tasks, enhancing the efficiency of your projects. Ideal for professionals seeking dependable tools for their mechanical needs.