- Premium Quality: Constructed from solid copper, these washers offer superior durability and resistance to high temperatures and corrosion, ensuring long-lasting performance. - 30-Piece Set: This comprehensive set includes 30 washers, providing a sufficient supply for various projects, making it a cost-effective choice for both professionals and DIY enthusiasts. - Excellent Conductivity: Designed to deliver exceptional electrical and thermal conductivity, these washers enhance the efficiency of your connections, reducing the risk of overheating or electrical failure. - Versatile Applications: Perfect for oil drain plugs, as well as connections in water, fuel, and hydraulic systems, these washers are designed to meet a wide range of usage needs, enhancing your equipment's reliability. - Ideal Compatibility: Compatible with various plumbing and automotive applications, these washers ensure a secure seal and optimal functionality in both home and professional settings. - Size and Performance: Each washer is precisely engineered for optimal fitment and performance, preventing leaks and ensuring that your connections remain tight under pressure. - Practical Use Cases: Whether you are maintaining your vehicle's oil system, connecting plumbing fixtures, or working on hydraulic machinery, this copper sump plug washer set provides the reliability you need to get the job done safely and efficiently.