The 80pcs brake bleeder screw is designed specifically for use in diesel engine maintenance and off-road vehicle servicing. Made of durable and flexible polyethylene, these screws have M6, M8, and M10 threads, ensuring compatibility with a wide range of vehicle systems. Their snug fit and precision threading make them easy to use, even for beginners. Whether you're working on a diesel truck, ATV, or other off-road vehicle, this tool is an indispensable accessory. With its high-quality materials and versatile design, it guarantees efficient and reliable operation.