- This set includes 10 pieces of SMR74ZZ ABEC 9 precision stainless steel ball bearings, offering a variety of sizes: 4x7x2.5, 3x6x2.5, 3x8x4, 4x9x4, 6x10x3, 9x17x5, and 8x14x4. - Ideal for high-speed applications, these bearings ensure smooth and precise rotation, making them perfect for machinery and equipment that demand reliability. - The SMR74ZZ ABEC 9 bearings exhibit superior load-carrying capacity and rotational accuracy, addressing the needs of professionals requiring consistent performance in their mechanical systems. - Additionally, the description includes the Catholic (S6700ZZ 10x15x4) bearing, providing an alternative option for specific applications. - The combination of varying sizes and types empowers users to find the perfect fit for diverse mechanical systems, enhancing compatibility across different projects. Use Scenarios: 1. Ideal for high-performance hobby robotics, where smooth motion is crucial for functionality. 2. Suitable for electric motors that require efficient and reliable rotation to operate effectively. 3. A perfect choice for DIY enthusiasts involved in creating custom machinery, where precision is essential. Experience the difference with SMR74ZZ ABEC 9 bearings—engineered for high-speed applications and crafted from durable stainless steel, they deliver the performance and reliability needed in demanding environments.