Features: High quality brass freeze plugs designed to replace damaged or worn component. Engineered with corrosion resistant brass material, these freeze plugs outperform standard steel variants in durability and withstand prolonged exposure to engine coolant. Rust prevention and corrosion resistance far exceed that of ordinary steel freezing plugs, and adapt to the long-term environment of engine coolant. Essential during engine overhauls or routine maintenance to seal coolant passages and prevent leaks in trucks, muscle cars, or performances vehicles with engine blocks. Each 8 piece set includes precise crafted brass freeze plugs, delivering reliable long term protection against rust and coolant system failures. Specifications: Component: Brass Refrigeration Plug, Carbon Steel Screw Part Number:MPE-100BR For 283ci 305ci 327ci 350ci 1957-1997 Package Includes: 8Pcs/set Brass Expansion Plugs note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.