400PCS Copper Sealing Washer Assortment Kit, High-Volume Red Copper Flat Gasket Set for Automotive Repair Shops, Industrial Workshops & Bulk Maintenance
400PCS high-volume copper sealing washer assortment kit, featuring 9 most frequently used sizes for automotive repair shops, industrial maintenance teams, and bulk fleet servicing. Made from 99.9% pure red copper, these long-lasting gaskets deliver exceptional ductility, heat resistance, and corrosion protection, ensuring a tight, leak-proof seal even on heavily worn surfaces. The compact, stackable storage box with labeled compartments keeps sizes organized, making it ideal for high-throughput workshops and mobile mechanics.